diff --git a/appveyor.yml b/appveyor.yml
index 1b87286f6..2b5f212f9 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -32,6 +32,9 @@ install:
   - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" set CMAKE_GENERATOR_NAME=Visual Studio 15 2017
   - if "%platform%"=="x64" set CMAKE_GENERATOR_NAME=%CMAKE_GENERATOR_NAME% Win64
   - cmake %CMAKE_DEFINES% -G "%CMAKE_GENERATOR_NAME%"
+  - set PATH=%PATH%;"C:\\Program Files (x86)\\Inno Setup 5"
+  - ps: Invoke-WebRequest -Uri https://download.microsoft.com/download/5/7/b/57b2947c-7221-4f33-b35e-2fc78cb10df4/vc_redist.x64.exe -OutFile .\packaging\windows-innosetup\vc_redist.x64.exe
+  - ps: Invoke-WebRequest -Uri https://download.microsoft.com/download/1/d/8/1d8137db-b5bb-4925-8c5d-927424a2e4de/vc_redist.x86.exe -OutFile .\packaging\windows-innosetup\vc_redist.x86.exe
   
 cache:
   - code\assimp.dir\%CONFIGURATION%
@@ -50,6 +53,7 @@ build:
   project: Assimp.sln
   
 after_build:
+  - if "%APPVEYOR_BUILD_WORKER_IMAGE%"=="Visual Studio 2017" iscc packaging\windows-innosetup\script.iss
   - 7z a assimp.7z bin\%CONFIGURATION%\* lib\%CONFIGURATION%\*
 
 test_script:
diff --git a/code/ObjFileImporter.cpp b/code/ObjFileImporter.cpp
index dd0733caa..cbf2363a4 100644
--- a/code/ObjFileImporter.cpp
+++ b/code/ObjFileImporter.cpp
@@ -76,41 +76,36 @@ using namespace std;
 
 // ------------------------------------------------------------------------------------------------
 //  Default constructor
-ObjFileImporter::ObjFileImporter() :
-    m_Buffer(),
-    m_pRootObject( NULL ),
-    m_strAbsPath( "" )
-{
+ObjFileImporter::ObjFileImporter()
+: m_Buffer()
+, m_pRootObject( nullptr )
+, m_strAbsPath( "" ) {
     DefaultIOSystem io;
     m_strAbsPath = io.getOsSeparator();
 }
 
 // ------------------------------------------------------------------------------------------------
 //  Destructor.
-ObjFileImporter::~ObjFileImporter()
-{
+ObjFileImporter::~ObjFileImporter() {
     delete m_pRootObject;
-    m_pRootObject = NULL;
+    m_pRootObject = nullptr;
 }
 
 // ------------------------------------------------------------------------------------------------
 //  Returns true, if file is an obj file.
-bool ObjFileImporter::CanRead( const std::string& pFile, IOSystem*  pIOHandler , bool checkSig ) const
-{
-    if(!checkSig) //Check File Extension
-    {
+bool ObjFileImporter::CanRead( const std::string& pFile, IOSystem*  pIOHandler , bool checkSig ) const {
+    if(!checkSig)  {
+        //Check File Extension
         return SimpleExtensionCheck(pFile,"obj");
-    }
-    else //Check file Header
-    {
+    } else {
+        // Check file Header
         static const char *pTokens[] = { "mtllib", "usemtl", "v ", "vt ", "vn ", "o ", "g ", "s ", "f " };
         return BaseImporter::SearchFileHeaderForToken(pIOHandler, pFile, pTokens, 9 );
     }
 }
 
 // ------------------------------------------------------------------------------------------------
-const aiImporterDesc* ObjFileImporter::GetInfo () const
-{
+const aiImporterDesc* ObjFileImporter::GetInfo () const {
     return &desc;
 }
 
diff --git a/packaging/windows-innosetup/script.iss b/packaging/windows-innosetup/script.iss
index f301bc4eb..695740679 100644
--- a/packaging/windows-innosetup/script.iss
+++ b/packaging/windows-innosetup/script.iss
@@ -2,7 +2,7 @@
 
 [Setup]
 AppName=Open Asset Import Library - SDK
-AppVerName=Open Asset Import Library - SDK (v3.3.1)
+AppVerName=Open Asset Import Library - SDK (v4.1.0)
 DefaultDirName={pf}\Assimp
 DefaultGroupName=Assimp
 UninstallDisplayIcon={app}\bin\x86\assimp.exe
@@ -12,9 +12,9 @@ SetupIconFile=..\..\tools\shared\assimp_tools_icon.ico
 WizardImageFile=compiler:WizModernImage-IS.BMP
 WizardSmallImageFile=compiler:WizModernSmallImage-IS.BMP
 LicenseFile=License.rtf
-OutputBaseFileName=assimp-sdk-3.3.1-setup
-VersionInfoVersion=3.3.1.0
-VersionInfoTextVersion=3.3.1
+OutputBaseFileName=assimp-sdk-4.1.0-setup
+VersionInfoVersion=4.1.0.0
+VersionInfoTextVersion=4.1.0
 VersionInfoCompany=Assimp Development Team
 ArchitecturesInstallIn64BitMode=x64
 
@@ -30,20 +30,19 @@ Name: "help";        Description: "Help Files"; Types: full compact
 Name: "samples";     Description: "Samples"; Types: full
 Name: "test";        Description: "Test Models (BSD-licensed)"; Types: full
 Name: "test_nonbsd"; Description: "Test Models (other (free) licenses)"; Types: full
-Name: "pyassimp";    Description: "Python Bindings"; Types: full
-Name: "dassimp";     Description: "D Bindings"; Types: full
-Name: "assimp_net";  Description: "C#/.NET Bindings"; Types: full
+;Name: "pyassimp";    Description: "Python Bindings"; Types: full
+;Name: "dassimp";     Description: "D Bindings"; Types: full
+;Name: "assimp_net";  Description: "C#/.NET Bindings"; Types: full
 
 [Run]
-Filename: "{app}\stub\vc_redist.x86.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2015 redistributable package (32 Bit)"; Check: not IsWin64
-Filename: "{app}\stub\vc_redist.x64.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2015 redistributable package (64 Bit)"; Check: IsWin64
+;Filename: "{app}\stub\vc_redist.x86.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2017 redistributable package (32 Bit)"; Check: not IsWin64
+Filename: "{app}\stub\vc_redist.x64.exe"; Parameters: "/qb"; StatusMsg: "Installing VS2017 redistributable package (64 Bit)"; Check: IsWin64
 
 [Files]
-
 Source: "readme_installer.txt"; DestDir: "{app}"; Flags: isreadme
 
 ; Installer stub
-Source: "vc_redist.x86.exe"; DestDir: "{app}\stub\"; Check: not IsWin64
+;Source: "vc_redist.x86.exe"; DestDir: "{app}\stub\"; Check: not IsWin64
 Source: "vc_redist.x64.exe"; DestDir: "{app}\stub\"; Check: IsWin64
 
 ; Common stuff
@@ -55,27 +54,27 @@ Source: "WEB"; DestDir: "{app}"
 Source: "..\..\scripts\*"; DestDir: "{app}\scripts"; Flags: recursesubdirs
 
 ; x86 binaries
-Source: "..\..\bin\release\x86\assimp-vc140-mt.dll";  DestDir: "{app}\bin\x86"
-Source: "..\..\bin\release\x86\assimp_viewer.exe";      DestDir: "{app}\bin\x86"; Components: tools
-Source: "D3DCompiler_42.dll";                         DestDir: "{app}\bin\x86"; Components: tools
-Source: "D3DX9_42.dll";                               DestDir: "{app}\bin\x86"; Components: tools
-Source: "..\..\bin\release\x86\assimp.exe";           DestDir: "{app}\bin\x86"; Components: tools
+;Source: "..\..\bin\release\x86\assimp-vc140-mt.dll";  DestDir: "{app}\bin\x86"
+;Source: "..\..\bin\release\x86\assimp_viewer.exe";    DestDir: "{app}\bin\x86"; Components: tools
+;Source: "C:\Windows\SysWOW64\D3DCompiler_42.dll";     DestDir: "{app}\bin\x86"; Components: tools
+;Source: "C:\Windows\SysWOW64\D3DX9_42.dll";           DestDir: "{app}\bin\x86"; Components: tools
+;Source: "..\..\bin\release\x86\assimp.exe";           DestDir: "{app}\bin\x86"; Components: tools
 
 ; x64 binaries
-Source: "..\..\bin\release\x64\assimp-vc140-mt.dll";  DestDir: "{app}\bin\x64"
-Source: "..\..\bin\release\x64\assimp_viewer.exe";      DestDir: "{app}\bin\x64"; Components: tools
-Source: "D3DCompiler_42_x64.dll";                     DestDir: "{app}\bin\x64"; DestName: "D3DCompiler_42.dll"; Components: tools
-Source: "D3DX9_42_x64.dll";                           DestDir: "{app}\bin\x64"; DestName: "D3DX9_42.dll"; Components: tools
-Source: "..\..\bin\release\x64\assimp.exe";           DestDir: "{app}\bin\x64"; Components: tools
+Source: "..\..\bin\release\assimp-vc140-mt.dll";  DestDir: "{app}\bin\x64"
+Source: "..\..\bin\release\assimp_viewer.exe";    DestDir: "{app}\bin\x64"; Components: tools
+Source: "C:\Windows\SysWOW64\D3DCompiler_42.dll"; DestDir: "{app}\bin\x64"; DestName: "D3DCompiler_42.dll"; Components: tools
+Source: "C:\Windows\SysWOW64\D3DX9_42.dll";       DestDir: "{app}\bin\x64"; DestName: "D3DX9_42.dll"; Components: tools
+Source: "..\..\bin\release\assimp.exe";           DestDir: "{app}\bin\x64"; Components: tools
 
 ; Documentation
-Source: "..\..\doc\AssimpDoc_Html\AssimpDoc.chm"; DestDir: "{app}\doc"; Components: help
-Source: "..\..\doc\AssimpCmdDoc_Html\AssimpCmdDoc.chm"; DestDir: "{app}\doc"; Components: help
-Source: "..\..\doc\datastructure.xml"; DestDir: "{app}\doc"; Components: help
+;Source: "..\..\doc\AssimpDoc_Html\AssimpDoc.chm"; DestDir: "{app}\doc"; Components: help
+;Source: "..\..\doc\AssimpCmdDoc_Html\AssimpCmdDoc.chm"; DestDir: "{app}\doc"; Components: help
+;Source: "..\..\doc\datastructure.xml"; DestDir: "{app}\doc"; Components: help
 
 ; Import libraries
-Source: "..\..\lib\release\x86\assimp.lib"; DestDir: "{app}\lib\x86"
-Source: "..\..\lib\release\x64\assimp.lib"; DestDir: "{app}\lib\x64"
+;Source: "..\..\lib\release\x86\assimp.lib"; DestDir: "{app}\lib\x86"
+Source: "..\..\lib\release\assimp-vc140-mt.lib"; DestDir: "{app}\lib\x64"
 
 ; Samples
 Source: "..\..\samples\*"; DestDir: "{app}\samples"; Flags: recursesubdirs; Components: samples
@@ -84,7 +83,7 @@ Source: "..\..\samples\*"; DestDir: "{app}\samples"; Flags: recursesubdirs; Comp
 Source: "..\..\include\*"; DestDir: "{app}\include"; Flags: recursesubdirs
 
 ; dAssimp
-Source: "..\..\port\dAssimp\*"; DestDir: "{app}\port\D"; Flags: recursesubdirs; Components: dassimp
+;Source: "..\..\port\dAssimp\*"; DestDir: "{app}\port\D"; Flags: recursesubdirs; Components: dassimp
 
 ; Assimp.NET
 ;Source: "..\..\port\Assimp.NET\*"; DestDir: "{app}\port\C#"; Flags: recursesubdirs; Components: assimp_net
@@ -97,15 +96,6 @@ Source: "..\..\port\dAssimp\*"; DestDir: "{app}\port\D"; Flags: recursesubdirs;
 ;Source: "..\..\test\regression\*"; DestDir: "{app}\test\regression"; Flags: recursesubdirs; Components: test
 ;Source: "..\..\test\models-nonbsd\*"; DestDir: "{app}\test\models-nonbsd"; Flags: recursesubdirs; Components: test_nonbsd
 
-; Source Code & Workspaces
-;Source: "..\..\code\*"; Excludes: "*.o"; DestDir: "{app}\code"; Flags: recursesubdirs; Components: wsource
-;Source: "..\..\workspaces\vc8\*.sln"; DestDir: "{app}\workspaces\vc8"; Components: wsource and vc8
-;Source: "..\..\workspaces\vc8\*.vcproj"; DestDir: "{app}\workspaces\vc8"; Components: wsource and vc8
-;Source: "..\..\workspaces\vc9\*.sln"; DestDir: "{app}\workspaces\vc9"; Components: wsource and vc9
-;Source: "..\..\workspaces\vc9\*.vcproj"; DestDir: "{app}\workspaces\vc9"; Components: wsource and vc9
-
-; Source: "Readme.txt"; DestDir: "{app}"; Flags: isreadme
-
 [Icons]
 Name: "{group}\Assimp Manual"; Filename: "{app}\doc\AssimpDoc.chm" ; Components: help
 Name: "{group}\Assimp Command Line Manual"; Filename: "{app}\doc\AssimpCmdDoc.chm"; Components: help
diff --git a/tools/make/build_env_win32.bat b/tools/make/build_env_win32.bat
new file mode 100644
index 000000000..4b8b4674b
--- /dev/null
+++ b/tools/make/build_env_win32.bat
@@ -0,0 +1,57 @@
+@echo off
+set "initialdir=%cd%"
+goto:main
+
+:exitsucc
+cd /d "%initialdir%"
+set initialdir=
+
+set MSBUILD_15="C:\Program Files (x86)\Microsoft Visual Studio\2018\Professional\MSBuild\15.0\Bin\msbuild.exe"
+set MSBUILD_14="C:\Program Files (x86)\MSBuild\14.0\Bin\msbuild.exe"
+
+if not "%VS150%"=="" set MSBUILD_15="%VS150%\MSBuild\15.0\Bin\msbuild.exe"
+
+if /i %VS_VERSION%==2017 (
+	set MS_BUILD_EXE=%MSBUILD_15%
+	set PLATFORM_VER=v141
+) else (
+	set MS_BUILD_EXE=%MSBUILD_14%
+	set PLATFORM_VER=v140
+)
+
+set MSBUILD=%MS_BUILD_EXE%
+
+exit /b 0
+
+:main
+if not defined PLATFORM set "PLATFORM=x64"
+
+::my work here is done?
+
+set PATH_VSWHERE=C:\Program Files (x86)\Microsoft Visual Studio\Installer\
+REM set PATH_STUDIO="C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\"
+
+for /f "usebackq tokens=*" %%i in (`"%PATH_VSWHERE%vswhere" -latest -products * -requires Microsoft.Component.MSBuild -property installationPath`) do (
+  set InstallDir=%%i
+)
+
+IF EXIST "%InstallDir%\VC\Auxiliary\Build\vcvarsall.bat" set VS150=%InstallDir%\
+
+set "CMAKE_GENERATOR=Visual Studio 15 2017 Win64"
+if not "%VS150%"=="" call "%VS150%\VC\Auxiliary\Build\vcvarsall.bat" %PLATFORM% && echo found VS 2o17 && set PLATFORM_VER=v141 && set VS_VERSION=2017 && goto:exitsucc
+
+set "CMAKE_GENERATOR=Visual Studio 14 2015 Win64"
+if defined VS140COMNTOOLS call "%VS140COMNTOOLS%..\..\VC\vcvarsall.bat" %PLATFORM% && echo found VS 2o15 && set PLATFORM_VER=v140 && set VS_VERSION=2015 && goto:exitsucc
+
+if defined VS130COMNTOOLS echo call ghostbusters... found lost VS version
+
+set "CMAKE_GENERATOR=Visual Studio 12 2013 Win64"
+if defined VS120COMNTOOLS call "%VS120COMNTOOLS%..\..\VC\vcvarsall.bat" %PLATFORM% && echo found VS 2o13 && set PLATFORM_VER=v120 && set VS_VERSION=2013 && goto:exitsucc
+
+set "CMAKE_GENERATOR=Visual Studio 11 2012 Win64"
+if defined VS110COMNTOOLS call "%VS110COMNTOOLS%..\..\VC\vcvarsall.bat" %PLATFORM% && echo found VS 2o12 && set PLATFORM_VER=v110 && set VS_VERSION=2012 && goto:exitsucc
+
+set "CMAKE_GENERATOR=Visual Studio 10 2010 Win64"
+if defined VS100COMNTOOLS call "%VS100COMNTOOLS%..\..\VC\vcvarsall.bat" %PLATFORM% && echo found VS 2o1o && set PLATFORM_VER=v100 && set VS_VERSION=2010 && goto:exitsucc
+
+goto:exitsucc
\ No newline at end of file
diff --git a/tools/make/make_all_win32_x64.bat b/tools/make/make_all_win32_x64.bat
new file mode 100644
index 000000000..4a1e663e6
--- /dev/null
+++ b/tools/make/make_all_win32_x64.bat
@@ -0,0 +1,18 @@
+rem @echo off
+setlocal
+call build_env_win32.bat
+
+set BUILD_CONFIG=release
+set PLATFORM_CONFIG=x64
+set MAX_CPU_CONFIG=4
+
+set CONFIG_PARAMETER=/p:Configuration="%BUILD_CONFIG%"
+set PLATFORM_PARAMETER=/p:Platform="%PLATFORM_CONFIG%"
+set CPU_PARAMETER=/maxcpucount:%MAX_CPU_CONFIG%
+set PLATFORM_TOOLSET=/p:PlatformToolset=%PLATFORM_VER%
+
+pushd ..\..\
+cmake CMakeLists.txt -G "Visual Studio 15 2017 Win64"
+%MSBUILD% assimp.sln %CONFIG_PARAMETER% %PLATFORM_PARAMETER% %CPU_PARAMETER% %PLATFORM_TOOLSET%
+popd
+endlocal