diff --git a/code/BlenderLoader.cpp b/code/BlenderLoader.cpp
index 90065ceee..d39cb9699 100644
--- a/code/BlenderLoader.cpp
+++ b/code/BlenderLoader.cpp
@@ -1225,6 +1225,16 @@ aiLight* BlenderImporter::ConvertLight(const Scene& /*in*/, const Object* obj, c
         case Lamp::Type_Local:
             out->mType = aiLightSource_POINT;
             break;
+        case Lamp::Type_Spot:
+            out->mType = aiLightSource_SPOT;
+
+            // blender orients directional lights as facing toward -z
+            out->mDirection = aiVector3D(0.f, 0.f, -1.f);
+            out->mUp = aiVector3D(0.f, 1.f, 0.f);
+
+            out->mAngleInnerCone = lamp->spotsize * (1.0f - lamp->spotblend);
+            out->mAngleOuterCone = lamp->spotsize;
+            break;
         case Lamp::Type_Sun:
             out->mType = aiLightSource_DIRECTIONAL;
 
@@ -1255,6 +1265,23 @@ aiLight* BlenderImporter::ConvertLight(const Scene& /*in*/, const Object* obj, c
     out->mColorAmbient = aiColor3D(lamp->r, lamp->g, lamp->b) * lamp->energy;
     out->mColorSpecular = aiColor3D(lamp->r, lamp->g, lamp->b) * lamp->energy;
     out->mColorDiffuse = aiColor3D(lamp->r, lamp->g, lamp->b) * lamp->energy;
+
+    // If default values are supplied, compute the coefficients from light's max distance
+    // Read this: https://imdoingitwrong.wordpress.com/2011/01/31/light-attenuation/
+    //
+    if (lamp->constant_coefficient == 1.0f && lamp->linear_coefficient == 0.0f && lamp->quadratic_coefficient == 0.0f && lamp->dist > 0.0f)
+    {
+        out->mAttenuationConstant = 1.0f;
+        out->mAttenuationLinear = 2.0f / lamp->dist;
+        out->mAttenuationQuadratic = 1.0f / (lamp->dist * lamp->dist);
+    }
+    else
+    {
+        out->mAttenuationConstant = lamp->constant_coefficient;
+        out->mAttenuationLinear = lamp->linear_coefficient;
+        out->mAttenuationQuadratic = lamp->quadratic_coefficient;
+    }
+
     return out.release();
 }
 
diff --git a/code/BlenderScene.cpp b/code/BlenderScene.cpp
index 4fc353b15..39c2793d5 100644
--- a/code/BlenderScene.cpp
+++ b/code/BlenderScene.cpp
@@ -211,9 +211,12 @@ template <> void Structure :: Convert<Lamp> (
     ReadField<ErrorPolicy_Warn>(dest.b,"b",db);
     ReadField<ErrorPolicy_Warn>(dest.k,"k",db);
     ReadField<ErrorPolicy_Igno>(dest.energy,"energy",db);
-    ReadField<ErrorPolicy_Igno>(dest.dist,"dist",db);
+    ReadField<ErrorPolicy_Warn>(dest.dist,"dist",db);
     ReadField<ErrorPolicy_Igno>(dest.spotsize,"spotsize",db);
     ReadField<ErrorPolicy_Igno>(dest.spotblend,"spotblend",db);
+    ReadField<ErrorPolicy_Warn>(dest.constant_coefficient, "coeff_const", db);
+    ReadField<ErrorPolicy_Warn>(dest.linear_coefficient, "coeff_lin", db);
+    ReadField<ErrorPolicy_Warn>(dest.quadratic_coefficient, "coeff_quad", db);
     ReadField<ErrorPolicy_Igno>(dest.att1,"att1",db);
     ReadField<ErrorPolicy_Igno>(dest.att2,"att2",db);
     ReadField<ErrorPolicy_Igno>(temp,"falloff_type",db);
diff --git a/code/BlenderScene.h b/code/BlenderScene.h
index 8e4223eb1..dd3f1444c 100644
--- a/code/BlenderScene.h
+++ b/code/BlenderScene.h
@@ -538,6 +538,10 @@ struct Lamp : ElemBase {
       float energy, dist, spotsize, spotblend;
       //float haint;
 
+      float constant_coefficient;
+      float linear_coefficient;
+      float quadratic_coefficient;
+
       float att1, att2;
       //struct CurveMapping *curfalloff;
       FalloffType falloff_type;
diff --git a/code/ColladaExporter.cpp b/code/ColladaExporter.cpp
index e7cc6907d..7c21dde43 100644
--- a/code/ColladaExporter.cpp
+++ b/code/ColladaExporter.cpp
@@ -64,13 +64,11 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 using namespace Assimp;
 
-namespace Assimp
-{
+namespace Assimp {
 
 // ------------------------------------------------------------------------------------------------
 // Worker function for exporting a scene to Collada. Prototyped and registered in Exporter.cpp
-void ExportSceneCollada(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* /*pProperties*/)
-{
+void ExportSceneCollada(const char* pFile, IOSystem* pIOSystem, const aiScene* pScene, const ExportProperties* /*pProperties*/) {
     std::string path = DefaultIOSystem::absolutePath(std::string(pFile));
     std::string file = DefaultIOSystem::completeBaseName(std::string(pFile));
 
@@ -93,12 +91,12 @@ void ExportSceneCollada(const char* pFile, IOSystem* pIOSystem, const aiScene* p
 
 } // end of namespace Assimp
 
-
-
 // ------------------------------------------------------------------------------------------------
 // Constructor for a specific scene to export
-ColladaExporter::ColladaExporter( const aiScene* pScene, IOSystem* pIOSystem, const std::string& path, const std::string& file) : mIOSystem(pIOSystem), mPath(path), mFile(file)
-{
+ColladaExporter::ColladaExporter( const aiScene* pScene, IOSystem* pIOSystem, const std::string& path, const std::string& file) 
+: mIOSystem(pIOSystem)
+, mPath(path)
+, mFile(file) {
     // make sure that all formatting happens using the standard, C locale and not the user's current locale
     mOutput.imbue( std::locale("C") );
     mOutput.precision(16);
@@ -115,17 +113,15 @@ ColladaExporter::ColladaExporter( const aiScene* pScene, IOSystem* pIOSystem, co
 
 // ------------------------------------------------------------------------------------------------
 // Destructor
-ColladaExporter::~ColladaExporter()
-{
-    if(mSceneOwned) {
+ColladaExporter::~ColladaExporter() {
+    if ( mSceneOwned ) {
         delete mScene;
     }
 }
 
 // ------------------------------------------------------------------------------------------------
 // Starts writing the contents
-void ColladaExporter::WriteFile()
-{
+void ColladaExporter::WriteFile() {
     // write the DTD
     mOutput << "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>" << endstr;
     // COLLADA element start
@@ -158,8 +154,7 @@ void ColladaExporter::WriteFile()
 
 // ------------------------------------------------------------------------------------------------
 // Writes the asset header
-void ColladaExporter::WriteHeader()
-{
+void ColladaExporter::WriteHeader() {
     static const ai_real epsilon = ai_real( 0.00001 );
     static const aiQuaternion x_rot(aiMatrix3x3(
         0, -1,  0,
@@ -240,51 +235,60 @@ void ColladaExporter::WriteHeader()
 
     // If no Scene metadata, use root node metadata
     aiMetadata* meta = mScene->mMetaData;
-    if (!meta)
+    if (nullptr == meta) {
         meta = mScene->mRootNode->mMetaData;
+    }
 
     aiString value;
-    if (!meta || !meta->Get("Author", value))
+    if (!meta || !meta->Get("Author", value)) {
         mOutput << startstr << "<author>" << "Assimp" << "</author>" << endstr;
-    else
+    } else {
         mOutput << startstr << "<author>" << XMLEscape(value.C_Str()) << "</author>" << endstr;
+    }
 
-    if (!meta || !meta->Get("AuthoringTool", value))
+    if (nullptr == meta || !meta->Get("AuthoringTool", value)) {
         mOutput << startstr << "<authoring_tool>" << "Assimp Exporter" << "</authoring_tool>" << endstr;
-    else
+    } else {
         mOutput << startstr << "<authoring_tool>" << XMLEscape(value.C_Str()) << "</authoring_tool>" << endstr;
+    }
 
-    if (meta)
-    {
-        if (meta->Get("Comments", value))
+    if (meta) {
+        if (meta->Get("Comments", value)) {
             mOutput << startstr << "<comments>" << XMLEscape(value.C_Str()) << "</comments>" << endstr;
-        if (meta->Get("Copyright", value))
+        }
+        if (meta->Get("Copyright", value)) {
             mOutput << startstr << "<copyright>" << XMLEscape(value.C_Str()) << "</copyright>" << endstr;
-        if (meta->Get("SourceData", value))
+        }
+        if (meta->Get("SourceData", value)) {
             mOutput << startstr << "<source_data>" << XMLEscape(value.C_Str()) << "</source_data>" << endstr;
+        }
     }
 
     PopTag();
     mOutput << startstr << "</contributor>" << endstr;
 
-    if (!meta || !meta->Get("Created", value))
+    if (nullptr == meta || !meta->Get("Created", value)) {
         mOutput << startstr << "<created>" << date_str << "</created>" << endstr;
-    else
+    } else {
         mOutput << startstr << "<created>" << XMLEscape(value.C_Str()) << "</created>" << endstr;
+    }
 
     // Modified date is always the date saved
     mOutput << startstr << "<modified>" << date_str << "</modified>" << endstr;
 
-    if (meta)
-    {
-        if (meta->Get("Keywords", value))
+    if (meta) {
+        if (meta->Get("Keywords", value)) {
             mOutput << startstr << "<keywords>" << XMLEscape(value.C_Str()) << "</keywords>" << endstr;
-        if (meta->Get("Revision", value))
+        }
+        if (meta->Get("Revision", value)) {
             mOutput << startstr << "<revision>" << XMLEscape(value.C_Str()) << "</revision>" << endstr;
-        if (meta->Get("Subject", value))
+        }
+        if (meta->Get("Subject", value)) {
             mOutput << startstr << "<subject>" << XMLEscape(value.C_Str()) << "</subject>" << endstr;
-        if (meta->Get("Title", value))
+        }
+        if (meta->Get("Title", value)) {
             mOutput << startstr << "<title>" << XMLEscape(value.C_Str()) << "</title>" << endstr;
+        }
     }
 
     mOutput << startstr << "<unit name=\"meter\" meter=\"" << scale << "\" />" << endstr;
@@ -299,12 +303,15 @@ void ColladaExporter::WriteTextures() {
     static const unsigned int buffer_size = 1024;
     char str[buffer_size];
 
-    if(mScene->HasTextures()) {
+    if (mScene->HasTextures()) {
         for(unsigned int i = 0; i < mScene->mNumTextures; i++) {
             // It would be great to be able to create a directory in portable standard C++, but it's not the case,
             // so we just write the textures in the current directory.
 
             aiTexture* texture = mScene->mTextures[i];
+            if ( nullptr == texture ) {
+                continue;
+            }
 
             ASSIMP_itoa10(str, buffer_size, i + 1);
 
@@ -458,6 +465,7 @@ void ColladaExporter::WritePointLight(const aiLight *const light){
     mOutput << startstr << "</point>" << endstr;
 
 }
+
 void ColladaExporter::WriteDirectionalLight(const aiLight *const light){
     const aiColor3D &color=  light->mColorDiffuse;
     mOutput << startstr << "<directional>" << endstr;
@@ -470,6 +478,7 @@ void ColladaExporter::WriteDirectionalLight(const aiLight *const light){
     mOutput << startstr << "</directional>" << endstr;
 
 }
+
 void ColladaExporter::WriteSpotLight(const aiLight *const light){
 
     const aiColor3D &color=  light->mColorDiffuse;
@@ -526,18 +535,16 @@ void ColladaExporter::WriteAmbienttLight(const aiLight *const light){
 
 // ------------------------------------------------------------------------------------------------
 // Reads a single surface entry from the given material keys
-void ColladaExporter::ReadMaterialSurface( Surface& poSurface, const aiMaterial* pSrcMat, aiTextureType pTexture, const char* pKey, size_t pType, size_t pIndex)
-{
-  if( pSrcMat->GetTextureCount( pTexture) > 0 )
-  {
+void ColladaExporter::ReadMaterialSurface( Surface& poSurface, const aiMaterial* pSrcMat, 
+                                          aiTextureType pTexture, const char* pKey, size_t pType, size_t pIndex) {
+  if( pSrcMat->GetTextureCount( pTexture) > 0 ) {
     aiString texfile;
     unsigned int uvChannel = 0;
     pSrcMat->GetTexture( pTexture, 0, &texfile, NULL, &uvChannel);
 
     std::string index_str(texfile.C_Str());
 
-    if(index_str.size() != 0 && index_str[0] == '*')
-    {
+    if(index_str.size() != 0 && index_str[0] == '*') {
         unsigned int index;
 
         index_str = index_str.substr(1, std::string::npos);
@@ -555,15 +562,13 @@ void ColladaExporter::ReadMaterialSurface( Surface& poSurface, const aiMaterial*
         } else {
             throw DeadlyExportError("could not find embedded texture at index " + index_str);
         }
-    } else
-    {
+    } else {
         poSurface.texture = texfile.C_Str();
     }
 
     poSurface.channel = uvChannel;
     poSurface.exist = true;
-  } else
-  {
+  } else {
     if( pKey )
       poSurface.exist = pSrcMat->Get( pKey, static_cast<unsigned int>(pType), static_cast<unsigned int>(pIndex), poSurface.color) == aiReturn_SUCCESS;
   }
@@ -571,15 +576,13 @@ void ColladaExporter::ReadMaterialSurface( Surface& poSurface, const aiMaterial*
 
 // ------------------------------------------------------------------------------------------------
 // Reimplementation of isalnum(,C locale), because AppVeyor does not see standard version.
-static bool isalnum_C(char c)
-{
+static bool isalnum_C(char c) {
   return ( nullptr != strchr("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz",c) );
 }
 
 // ------------------------------------------------------------------------------------------------
 // Writes an image entry for the given surface
-void ColladaExporter::WriteImageEntry( const Surface& pSurface, const std::string& pNameAdd)
-{
+void ColladaExporter::WriteImageEntry( const Surface& pSurface, const std::string& pNameAdd) {
   if( !pSurface.texture.empty() )
   {
     mOutput << startstr << "<image id=\"" << XMLEscape(pNameAdd) << "\">" << endstr;
@@ -833,8 +836,9 @@ void ColladaExporter::WriteControllerLibrary()
     mOutput << startstr << "<library_controllers>" << endstr;
     PushTag();
     
-    for( size_t a = 0; a < mScene->mNumMeshes; ++a)
+    for( size_t a = 0; a < mScene->mNumMeshes; ++a) {
         WriteController( a);
+    }
 
     PopTag();
     mOutput << startstr << "</library_controllers>" << endstr;
diff --git a/code/FBXExportNode.h b/code/FBXExportNode.h
index b388a4f86..ef3bc781a 100644
--- a/code/FBXExportNode.h
+++ b/code/FBXExportNode.h
@@ -59,12 +59,11 @@ namespace FBX {
     class Node;
 }
 
-class FBX::Node
-{
-public: // public data members
+class FBX::Node {
+public: 
     // TODO: accessors
     std::string name; // node name
-    std::vector<FBX::Property> properties; // node properties
+    std::vector<FBX::FBXExportProperty> properties; // node properties
     std::vector<FBX::Node> children; // child nodes
 
     // some nodes always pretend they have children...
@@ -215,7 +214,7 @@ public: // static member functions
         Assimp::StreamWriterLE& s,
         bool binary, int indent
     ) {
-        FBX::Property p(value);
+        FBX::FBXExportProperty p(value);
         FBX::Node node(name, p);
         node.Dump(s, binary, indent);
     }
diff --git a/code/FBXExportProperty.cpp b/code/FBXExportProperty.cpp
index ac464c806..f8593e629 100644
--- a/code/FBXExportProperty.cpp
+++ b/code/FBXExportProperty.cpp
@@ -53,186 +53,209 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <sstream> // ostringstream
 
 namespace Assimp {
+namespace FBX {
+
 // constructors for single element properties
 
-FBX::Property::Property(bool v)
-    : type('C'), data(1)
-{
-    data = {uint8_t(v)};
+FBXExportProperty::FBXExportProperty(bool v)
+: type('C')
+, data(1) {
+    data = {
+        uint8_t(v)
+    };
 }
 
-FBX::Property::Property(int16_t v) : type('Y'), data(2)
-{
+FBXExportProperty::FBXExportProperty(int16_t v)
+: type('Y')
+, data(2) {
     uint8_t* d = data.data();
     (reinterpret_cast<int16_t*>(d))[0] = v;
 }
 
-FBX::Property::Property(int32_t v) : type('I'), data(4)
-{
+FBXExportProperty::FBXExportProperty(int32_t v)
+: type('I')
+, data(4) {
     uint8_t* d = data.data();
     (reinterpret_cast<int32_t*>(d))[0] = v;
 }
 
-FBX::Property::Property(float v) : type('F'), data(4)
-{
+FBXExportProperty::FBXExportProperty(float v)
+: type('F')
+, data(4) {
     uint8_t* d = data.data();
     (reinterpret_cast<float*>(d))[0] = v;
 }
 
-FBX::Property::Property(double v) : type('D'), data(8)
-{
+FBXExportProperty::FBXExportProperty(double v)
+: type('D')
+, data(8) {
     uint8_t* d = data.data();
     (reinterpret_cast<double*>(d))[0] = v;
 }
 
-FBX::Property::Property(int64_t v) : type('L'), data(8)
-{
+FBXExportProperty::FBXExportProperty(int64_t v)
+: type('L')
+, data(8) {
     uint8_t* d = data.data();
     (reinterpret_cast<int64_t*>(d))[0] = v;
 }
 
-
 // constructors for array-type properties
 
-FBX::Property::Property(const char* c, bool raw)
-    : Property(std::string(c), raw)
-{}
+FBXExportProperty::FBXExportProperty(const char* c, bool raw)
+: FBXExportProperty(std::string(c), raw) {
+    // empty
+}
 
 // strings can either be saved as "raw" (R) data, or "string" (S) data
-FBX::Property::Property(const std::string& s, bool raw)
-    : type(raw ? 'R' : 'S'), data(s.size())
-{
+FBXExportProperty::FBXExportProperty(const std::string& s, bool raw)
+: type(raw ? 'R' : 'S')
+, data(s.size()) {
     for (size_t i = 0; i < s.size(); ++i) {
         data[i] = uint8_t(s[i]);
     }
 }
 
-FBX::Property::Property(const std::vector<uint8_t>& r)
-    : type('R'), data(r)
-{}
+FBXExportProperty::FBXExportProperty(const std::vector<uint8_t>& r)
+: type('R')
+, data(r) {
+    // empty
+}
 
-FBX::Property::Property(const std::vector<int32_t>& va)
-    : type('i'), data(4*va.size())
-{
+FBXExportProperty::FBXExportProperty(const std::vector<int32_t>& va)
+: type('i')
+, data(4 * va.size() ) {
     int32_t* d = reinterpret_cast<int32_t*>(data.data());
-    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
+    for (size_t i = 0; i < va.size(); ++i) {
+        d[i] = va[i];
+    }
 }
 
-FBX::Property::Property(const std::vector<int64_t>& va)
-    : type('l'), data(8*va.size())
-{
+FBXExportProperty::FBXExportProperty(const std::vector<int64_t>& va)
+: type('l')
+, data(8 * va.size()) {
     int64_t* d = reinterpret_cast<int64_t*>(data.data());
-    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
+    for (size_t i = 0; i < va.size(); ++i) {
+        d[i] = va[i];
+    }
 }
 
-FBX::Property::Property(const std::vector<float>& va)
-    : type('f'), data(4*va.size())
-{
+FBXExportProperty::FBXExportProperty(const std::vector<float>& va)
+: type('f')
+, data(4 * va.size()) {
     float* d = reinterpret_cast<float*>(data.data());
-    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
+    for (size_t i = 0; i < va.size(); ++i) {
+        d[i] = va[i];
+    }
 }
 
-FBX::Property::Property(const std::vector<double>& va)
-    : type('d'), data(8*va.size())
-{
+FBXExportProperty::FBXExportProperty(const std::vector<double>& va)
+: type('d')
+, data(8 * va.size()) {
     double* d = reinterpret_cast<double*>(data.data());
-    for (size_t i = 0; i < va.size(); ++i) { d[i] = va[i]; }
+    for (size_t i = 0; i < va.size(); ++i) {
+        d[i] = va[i];
+    }
 }
 
-FBX::Property::Property(const aiMatrix4x4& vm)
-    : type('d'), data(8*16)
-{
+FBXExportProperty::FBXExportProperty(const aiMatrix4x4& vm)
+: type('d')
+, data(8 * 16) {
     double* d = reinterpret_cast<double*>(data.data());
     for (unsigned int c = 0; c < 4; ++c) {
         for (unsigned int r = 0; r < 4; ++r) {
-            d[4*c+r] = vm[r][c];
+            d[4 * c + r] = vm[r][c];
         }
     }
 }
 
 // public member functions
 
-size_t FBX::Property::size()
-{
+size_t FBXExportProperty::size() {
     switch (type) {
-    case 'C': case 'Y': case 'I': case 'F': case 'D': case 'L':
-        return data.size() + 1;
-    case 'S': case 'R':
-        return data.size() + 5;
-    case 'i': case 'd':
-        return data.size() + 13;
-    default:
-        throw DeadlyExportError("Requested size on property of unknown type");
+        case 'C':
+        case 'Y':
+        case 'I':
+        case 'F':
+        case 'D':
+        case 'L':
+            return data.size() + 1;
+        case 'S':
+        case 'R':
+            return data.size() + 5;
+        case 'i':
+        case 'd':
+            return data.size() + 13;
+        default:
+            throw DeadlyExportError("Requested size on property of unknown type");
     }
 }
 
-void FBX::Property::DumpBinary(Assimp::StreamWriterLE &s)
-{
+void FBXExportProperty::DumpBinary(Assimp::StreamWriterLE& s) {
     s.PutU1(type);
     uint8_t* d = data.data();
     size_t N;
     switch (type) {
-    case 'C': s.PutU1(*(reinterpret_cast<uint8_t*>(d))); return;
-    case 'Y': s.PutI2(*(reinterpret_cast<int16_t*>(d))); return;
-    case 'I': s.PutI4(*(reinterpret_cast<int32_t*>(d))); return;
-    case 'F': s.PutF4(*(reinterpret_cast<float*>(d))); return;
-    case 'D': s.PutF8(*(reinterpret_cast<double*>(d))); return;
-    case 'L': s.PutI8(*(reinterpret_cast<int64_t*>(d))); return;
-    case 'S':
-    case 'R':
-        s.PutU4(uint32_t(data.size()));
-        for (size_t i = 0; i < data.size(); ++i) { s.PutU1(data[i]); }
-        return;
-    case 'i':
-        N = data.size() / 4;
-        s.PutU4(uint32_t(N)); // number of elements
-        s.PutU4(0); // no encoding (1 would be zip-compressed)
-        // TODO: compress if large?
-        s.PutU4(uint32_t(data.size())); // data size
-        for (size_t i = 0; i < N; ++i) {
-            s.PutI4((reinterpret_cast<int32_t*>(d))[i]);
-        }
-        return;
-    case 'l':
-        N = data.size() / 8;
-        s.PutU4(uint32_t(N)); // number of elements
-        s.PutU4(0); // no encoding (1 would be zip-compressed)
-        // TODO: compress if large?
-        s.PutU4(uint32_t(data.size())); // data size
-        for (size_t i = 0; i < N; ++i) {
-            s.PutI8((reinterpret_cast<int64_t*>(d))[i]);
-        }
-        return;
-    case 'f':
-        N = data.size() / 4;
-        s.PutU4(uint32_t(N)); // number of elements
-        s.PutU4(0); // no encoding (1 would be zip-compressed)
-        // TODO: compress if large?
-        s.PutU4(uint32_t(data.size())); // data size
-        for (size_t i = 0; i < N; ++i) {
-            s.PutF4((reinterpret_cast<float*>(d))[i]);
-        }
-        return;
-    case 'd':
-        N = data.size() / 8;
-        s.PutU4(uint32_t(N)); // number of elements
-        s.PutU4(0); // no encoding (1 would be zip-compressed)
-        // TODO: compress if large?
-        s.PutU4(uint32_t(data.size())); // data size
-        for (size_t i = 0; i < N; ++i) {
-            s.PutF8((reinterpret_cast<double*>(d))[i]);
-        }
-        return;
-    default:
-        std::ostringstream err;
-        err << "Tried to dump property with invalid type '";
-        err << type << "'!";
-        throw DeadlyExportError(err.str());
+        case 'C': s.PutU1(*(reinterpret_cast<uint8_t*>(d))); return;
+        case 'Y': s.PutI2(*(reinterpret_cast<int16_t*>(d))); return;
+        case 'I': s.PutI4(*(reinterpret_cast<int32_t*>(d))); return;
+        case 'F': s.PutF4(*(reinterpret_cast<float*>(d))); return;
+        case 'D': s.PutF8(*(reinterpret_cast<double*>(d))); return;
+        case 'L': s.PutI8(*(reinterpret_cast<int64_t*>(d))); return;
+        case 'S':
+        case 'R':
+            s.PutU4(uint32_t(data.size()));
+            for (size_t i = 0; i < data.size(); ++i) { s.PutU1(data[i]); }
+            return;
+        case 'i':
+            N = data.size() / 4;
+            s.PutU4(uint32_t(N)); // number of elements
+            s.PutU4(0); // no encoding (1 would be zip-compressed)
+            // TODO: compress if large?
+            s.PutU4(uint32_t(data.size())); // data size
+            for (size_t i = 0; i < N; ++i) {
+                s.PutI4((reinterpret_cast<int32_t*>(d))[i]);
+            }
+            return;
+        case 'l':
+            N = data.size() / 8;
+            s.PutU4(uint32_t(N)); // number of elements
+            s.PutU4(0); // no encoding (1 would be zip-compressed)
+            // TODO: compress if large?
+            s.PutU4(uint32_t(data.size())); // data size
+            for (size_t i = 0; i < N; ++i) {
+                s.PutI8((reinterpret_cast<int64_t*>(d))[i]);
+            }
+            return;
+        case 'f':
+            N = data.size() / 4;
+            s.PutU4(uint32_t(N)); // number of elements
+            s.PutU4(0); // no encoding (1 would be zip-compressed)
+            // TODO: compress if large?
+            s.PutU4(uint32_t(data.size())); // data size
+            for (size_t i = 0; i < N; ++i) {
+                s.PutF4((reinterpret_cast<float*>(d))[i]);
+            }
+            return;
+        case 'd':
+            N = data.size() / 8;
+            s.PutU4(uint32_t(N)); // number of elements
+            s.PutU4(0); // no encoding (1 would be zip-compressed)
+            // TODO: compress if large?
+            s.PutU4(uint32_t(data.size())); // data size
+            for (size_t i = 0; i < N; ++i) {
+                s.PutF8((reinterpret_cast<double*>(d))[i]);
+            }
+            return;
+        default:
+            std::ostringstream err;
+            err << "Tried to dump property with invalid type '";
+            err << type << "'!";
+            throw DeadlyExportError(err.str());
     }
 }
 
-void FBX::Property::DumpAscii(Assimp::StreamWriterLE &outstream, int indent)
-{
+void FBXExportProperty::DumpAscii(Assimp::StreamWriterLE& outstream, int indent) {
     std::ostringstream ss;
     ss.imbue(std::locale::classic());
     ss.precision(15); // this seems to match official FBX SDK exports
@@ -240,8 +263,7 @@ void FBX::Property::DumpAscii(Assimp::StreamWriterLE &outstream, int indent)
     outstream.PutString(ss.str());
 }
 
-void FBX::Property::DumpAscii(std::ostream& s, int indent)
-{
+void FBXExportProperty::DumpAscii(std::ostream& s, int indent) {
     // no writing type... or anything. just shove it into the stream.
     uint8_t* d = data.data();
     size_t N;
@@ -359,6 +381,9 @@ void FBX::Property::DumpAscii(std::ostream& s, int indent)
         throw runtime_error(err.str());
     }
 }
-}
+
+} // Namespace FBX
+} // Namespace Assimp
+
 #endif // ASSIMP_BUILD_NO_FBX_EXPORTER
 #endif // ASSIMP_BUILD_NO_EXPORT
diff --git a/code/FBXExportProperty.h b/code/FBXExportProperty.h
index 424bf8b32..d692fe6ee 100644
--- a/code/FBXExportProperty.h
+++ b/code/FBXExportProperty.h
@@ -47,7 +47,6 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #ifndef ASSIMP_BUILD_NO_FBX_EXPORTER
 
-
 #include <assimp/types.h> // aiMatrix4x4
 #include <assimp/StreamWriter.h> // StreamWriterLE
 
@@ -58,10 +57,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 namespace Assimp {
 namespace FBX {
-    class Property;
-}
 
-/** FBX::Property
+/** @brief FBX::Property
  *
  *  Holds a value of any of FBX's recognized types,
  *  each represented by a particular one-character code.
@@ -79,35 +76,34 @@ namespace FBX {
  *  S : string (array of 1-byte char)
  *  R : raw data (array of bytes)
  */
-class FBX::Property
-{
+class FBXExportProperty {
 public:
     // constructors for basic types.
     // all explicit to avoid accidental typecasting
-    explicit Property(bool v);
+    explicit FBXExportProperty(bool v);
     // TODO: determine if there is actually a byte type,
     // or if this always means <bool>. 'C' seems to imply <char>,
     // so possibly the above was intended to represent both.
-    explicit Property(int16_t v);
-    explicit Property(int32_t v);
-    explicit Property(float v);
-    explicit Property(double v);
-    explicit Property(int64_t v);
+    explicit FBXExportProperty(int16_t v);
+    explicit FBXExportProperty(int32_t v);
+    explicit FBXExportProperty(float v);
+    explicit FBXExportProperty(double v);
+    explicit FBXExportProperty(int64_t v);
     // strings can either be stored as 'R' (raw) or 'S' (string) type
-    explicit Property(const char* c, bool raw=false);
-    explicit Property(const std::string& s, bool raw=false);
-    explicit Property(const std::vector<uint8_t>& r);
-    explicit Property(const std::vector<int32_t>& va);
-    explicit Property(const std::vector<int64_t>& va);
-    explicit Property(const std::vector<double>& va);
-    explicit Property(const std::vector<float>& va);
-    explicit Property(const aiMatrix4x4& vm);
+    explicit FBXExportProperty(const char* c, bool raw = false);
+    explicit FBXExportProperty(const std::string& s, bool raw = false);
+    explicit FBXExportProperty(const std::vector<uint8_t>& r);
+    explicit FBXExportProperty(const std::vector<int32_t>& va);
+    explicit FBXExportProperty(const std::vector<int64_t>& va);
+    explicit FBXExportProperty(const std::vector<double>& va);
+    explicit FBXExportProperty(const std::vector<float>& va);
+    explicit FBXExportProperty(const aiMatrix4x4& vm);
 
     // this will catch any type not defined above,
     // so that we don't accidentally convert something we don't want.
     // for example (const char*) --> (bool)... seriously wtf C++
     template <class T>
-    explicit Property(T v) : type('X') {
+    explicit FBXExportProperty(T v) : type('X') {
         static_assert(std::is_void<T>::value, "TRIED TO CREATE FBX PROPERTY WITH UNSUPPORTED TYPE, CHECK YOUR PROPERTY INSTANTIATION");
     } // note: no line wrap so it appears verbatim on the compiler error
 
@@ -115,16 +111,19 @@ public:
     size_t size();
 
     // write this property node as binary data to the given stream
-    void DumpBinary(Assimp::StreamWriterLE &s);
-    void DumpAscii(Assimp::StreamWriterLE &s, int indent=0);
-    void DumpAscii(std::ostream &s, int indent=0);
+    void DumpBinary(Assimp::StreamWriterLE& s);
+    void DumpAscii(Assimp::StreamWriterLE& s, int indent = 0);
+    void DumpAscii(std::ostream& s, int indent = 0);
     // note: make sure the ostream is in classic "C" locale
 
 private:
     char type;
     std::vector<uint8_t> data;
 };
-}
+
+} // Namespace FBX
+} // Namespace Assimp
+
 #endif // ASSIMP_BUILD_NO_FBX_EXPORTER
 
 #endif // AI_FBXEXPORTPROPERTY_H_INC
diff --git a/code/FBXExporter.cpp b/code/FBXExporter.cpp
index ddfac6d34..dd34e135f 100644
--- a/code/FBXExporter.cpp
+++ b/code/FBXExporter.cpp
@@ -2271,8 +2271,8 @@ void FBXExporter::WriteModelNode(
 
     // not sure what these are for,
     // but they seem to be omnipresent
-    m.AddChild("Shading", Property(true));
-    m.AddChild("Culling", Property("CullingOff"));
+    m.AddChild("Shading", FBXExportProperty(true));
+    m.AddChild("Culling", FBXExportProperty("CullingOff"));
 
     m.Dump(outstream, binary, 1);
 }
@@ -2385,7 +2385,7 @@ void FBXExporter::WriteModelNodes(
         na.AddProperties(
             node_attribute_uid, FBX::SEPARATOR + "NodeAttribute", "LimbNode"
         );
-        na.AddChild("TypeFlags", Property("Skeleton"));
+        na.AddChild("TypeFlags", FBXExportProperty("Skeleton"));
         na.Dump(outstream, binary, 1);
         // and connect them
         connections.emplace_back("C", "OO", node_attribute_uid, node_uid);
diff --git a/code/res/assimp.rc b/code/res/assimp.rc
index ae0c87b8a..14ffdf4f5 100644
--- a/code/res/assimp.rc
+++ b/code/res/assimp.rc
@@ -1,7 +1,7 @@
 // Microsoft Visual C++ generated resource script.
 //
 #include "resource.h"
-#include "..\..\revision.h"
+#include "revision.h"
 
 #define APSTUDIO_READONLY_SYMBOLS
 /////////////////////////////////////////////////////////////////////////////
diff --git a/packaging/windows-innosetup/script_x86.iss b/packaging/windows-innosetup/script_x86.iss
index 29ab5c011..d22d23b64 100644
--- a/packaging/windows-innosetup/script_x86.iss
+++ b/packaging/windows-innosetup/script_x86.iss
@@ -16,7 +16,7 @@ OutputBaseFileName=assimp-sdk-5.0.0-setup
 VersionInfoVersion=4.1.0.0
 VersionInfoTextVersion=4.1.0
 VersionInfoCompany=Assimp Development Team
-ArchitecturesInstallIn64BitMode=x86
+;ArchitecturesInstallIn64BitMode=x64
 
 [Types]
 Name: "full";    Description: "Full installation"
diff --git a/test/models/PLY/cube_test.ply b/test/models/PLY/cube_test.ply
index 6ec6d3991..a86d022a5 100644
--- a/test/models/PLY/cube_test.ply
+++ b/test/models/PLY/cube_test.ply
@@ -1,6 +1,6 @@
 ply
 format ascii 1.0
-comment Created by Open Asset Import Library - http://assimp.sf.net (v4.1.412856994)
+comment Created by Open Asset Import Library - http://assimp.sf.net (v4.1.3297435427)
 element vertex 8
 property float x
 property float y