diff --git a/code/FIReader.cpp b/code/FIReader.cpp
index 617c87be6..19d94ed94 100755
--- a/code/FIReader.cpp
+++ b/code/FIReader.cpp
@@ -84,8 +84,8 @@ static size_t parseMagic(const uint8_t *data, const uint8_t *dataEnd) {
         return 4;
     case 0x3c3f786d: // "<?xm"
         {
-            auto xmlDeclarationsLength = sizeof(xmlDeclarations) / sizeof(xmlDeclarations[0]);
-            for (auto i = 0; i < xmlDeclarationsLength; ++i) {
+            size_t xmlDeclarationsLength = sizeof(xmlDeclarations) / sizeof(xmlDeclarations[0]);
+            for (size_t i = 0; i < xmlDeclarationsLength; ++i) {
                 auto xmlDeclaration = xmlDeclarations[i];
                 ptrdiff_t xmlDeclarationLength = strlen(xmlDeclaration);
                 if ((dataEnd - data >= xmlDeclarationLength) && (memcmp(xmlDeclaration, data, xmlDeclarationLength) == 0)) {
@@ -127,7 +127,7 @@ static std::string parseUTF16String(const uint8_t *data, size_t len) {
 
 struct FIStringValueImpl: public FIStringValue {
     inline FIStringValueImpl(std::string &&value_) { value = std::move(value_); }
-    virtual const std::string &toString() const override { return value; }
+    virtual const std::string &toString() const /*override*/ { return value; }
 };
 
 std::shared_ptr<FIStringValue> FIStringValue::create(std::string &&value) {
@@ -138,7 +138,7 @@ struct FIHexValueImpl: public FIHexValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIHexValueImpl(std::vector<uint8_t> &&value_):  strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
@@ -158,14 +158,14 @@ struct FIBase64ValueImpl: public FIBase64Value {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIBase64ValueImpl(std::vector<uint8_t> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
             uint8_t c1, c2;
             int imod3 = 0;
-            auto valueSize = value.size();
-            for (auto i = 0; i < valueSize; ++i) {
+            std::vector<uint8_t>::size_type valueSize = value.size();
+            for (std::vector<uint8_t>::size_type i = 0; i < valueSize; ++i) {
                 c2 = value[i];
                 switch (imod3) {
                 case 0:
@@ -208,7 +208,7 @@ struct FIShortValueImpl: public FIShortValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIShortValueImpl(std::vector<int16_t> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
@@ -228,7 +228,7 @@ struct FIIntValueImpl: public FIIntValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIIntValueImpl(std::vector<int32_t> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
@@ -248,7 +248,7 @@ struct FILongValueImpl: public FILongValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FILongValueImpl(std::vector<int64_t> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
@@ -268,7 +268,7 @@ struct FIBoolValueImpl: public FIBoolValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIBoolValueImpl(std::vector<bool> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
@@ -289,7 +289,7 @@ struct FIFloatValueImpl: public FIFloatValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIFloatValueImpl(std::vector<float> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
@@ -309,7 +309,7 @@ struct FIDoubleValueImpl: public FIDoubleValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIDoubleValueImpl(std::vector<double> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
@@ -329,13 +329,13 @@ struct FIUUIDValueImpl: public FIUUIDValue {
     mutable std::string strValue;
     mutable bool strValueValid;
     inline FIUUIDValueImpl(std::vector<uint8_t> &&value_): strValueValid(false) { value = std::move(value_); }
-    virtual const std::string &toString() const override {
+    virtual const std::string &toString() const /*override*/ {
         if (!strValueValid) {
             strValueValid = true;
             std::ostringstream os;
             os << std::hex << std::uppercase << std::setfill('0');
-            auto valueSize = value.size();
-            for (auto i = 0; i < valueSize; ++i) {
+            std::vector<uint8_t>::size_type valueSize = value.size();
+            for (std::vector<uint8_t>::size_type i = 0; i < valueSize; ++i) {
                 switch (i & 15) {
                 case 0:
                     if (i > 0) {
@@ -376,7 +376,7 @@ std::shared_ptr<FIUUIDValue> FIUUIDValue::create(std::vector<uint8_t> &&value) {
 
 struct FICDATAValueImpl: public FICDATAValue {
     inline FICDATAValueImpl(std::string &&value_) { value = std::move(value_); }
-    virtual const std::string &toString() const override { return value; }
+    virtual const std::string &toString() const /*override*/ { return value; }
 };
 
 std::shared_ptr<FICDATAValue> FICDATAValue::create(std::string &&value) {
@@ -384,19 +384,19 @@ std::shared_ptr<FICDATAValue> FICDATAValue::create(std::string &&value) {
 }
 
 struct FIHexDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         return FIHexValue::create(std::vector<uint8_t>(data, data + len));
     }
 };
 
 struct FIBase64Decoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         return FIBase64Value::create(std::vector<uint8_t>(data, data + len));
     }
 };
 
 struct FIShortDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         if (len & 1) {
             throw DeadlyImportError(parseErrorMessage);
         }
@@ -413,7 +413,7 @@ struct FIShortDecoder: public FIDecoder {
 };
 
 struct FIIntDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         if (len & 3) {
             throw DeadlyImportError(parseErrorMessage);
         }
@@ -430,7 +430,7 @@ struct FIIntDecoder: public FIDecoder {
 };
 
 struct FILongDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         if (len & 7) {
             throw DeadlyImportError(parseErrorMessage);
         }
@@ -448,7 +448,7 @@ struct FILongDecoder: public FIDecoder {
 };
 
 struct FIBoolDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         if (len < 1) {
             throw DeadlyImportError(parseErrorMessage);
         }
@@ -470,7 +470,7 @@ struct FIBoolDecoder: public FIDecoder {
 };
 
 struct FIFloatDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         if (len & 3) {
             throw DeadlyImportError(parseErrorMessage);
         }
@@ -487,7 +487,7 @@ struct FIFloatDecoder: public FIDecoder {
 };
 
 struct FIDoubleDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         if (len & 7) {
             throw DeadlyImportError(parseErrorMessage);
         }
@@ -505,7 +505,7 @@ struct FIDoubleDecoder: public FIDecoder {
 };
 
 struct FIUUIDDecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         if (len & 15) {
             throw DeadlyImportError(parseErrorMessage);
         }
@@ -514,7 +514,7 @@ struct FIUUIDDecoder: public FIDecoder {
 };
 
 struct FICDATADecoder: public FIDecoder {
-    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) override {
+    virtual std::shared_ptr<const FIValue> decode(const uint8_t *data, size_t len) /*override*/ {
         return FICDATAValue::create(parseUTF8String(data, len));
     }
 };
@@ -529,7 +529,7 @@ public:
 
     virtual ~CFIReaderImpl() {}
 
-    virtual bool read() override {
+    virtual bool read() /*override*/ {
         if (headerPending) {
             headerPending = false;
             parseHeader();
@@ -632,29 +632,29 @@ public:
         throw DeadlyImportError(parseErrorMessage);
     }
 
-    virtual irr::io::EXML_NODE getNodeType() const override {
+    virtual irr::io::EXML_NODE getNodeType() const /*override*/ {
         return currentNodeType;
     }
 
-    virtual int getAttributeCount() const override {
+    virtual int getAttributeCount() const /*override*/ {
         return static_cast<int>(attributes.size());
     }
 
-    virtual const char* getAttributeName(int idx) const override {
+    virtual const char* getAttributeName(int idx) const /*override*/ {
         if (idx < 0 || idx >= (int)attributes.size()) {
             return nullptr;
         }
         return attributes[idx].name.c_str();
     }
 
-    virtual const char* getAttributeValue(int idx) const override {
+    virtual const char* getAttributeValue(int idx) const /*override*/ {
         if (idx < 0 || idx >= (int)attributes.size()) {
             return nullptr;
         }
         return attributes[idx].value->toString().c_str();
     }
 
-    virtual const char* getAttributeValue(const char* name) const override {
+    virtual const char* getAttributeValue(const char* name) const /*override*/ {
         const Attribute* attr = getAttributeByName(name);
         if (!attr) {
             return nullptr;
@@ -662,7 +662,7 @@ public:
         return attr->value->toString().c_str();
     }
 
-    virtual const char* getAttributeValueSafe(const char* name) const override {
+    virtual const char* getAttributeValueSafe(const char* name) const /*override*/ {
         const Attribute* attr = getAttributeByName(name);
         if (!attr) {
             return EmptyString.c_str();
@@ -670,7 +670,7 @@ public:
         return attr->value->toString().c_str();
     }
 
-    virtual int getAttributeValueAsInt(const char* name) const override {
+    virtual int getAttributeValueAsInt(const char* name) const /*override*/ {
         const Attribute* attr = getAttributeByName(name);
         if (!attr) {
             return 0;
@@ -682,7 +682,7 @@ public:
         return stoi(attr->value->toString());
     }
 
-    virtual int getAttributeValueAsInt(int idx) const override {
+    virtual int getAttributeValueAsInt(int idx) const /*override*/ {
         if (idx < 0 || idx >= (int)attributes.size()) {
             return 0;
         }
@@ -693,7 +693,7 @@ public:
         return stoi(attributes[idx].value->toString());
     }
 
-    virtual float getAttributeValueAsFloat(const char* name) const override {
+    virtual float getAttributeValueAsFloat(const char* name) const /*override*/ {
         const Attribute* attr = getAttributeByName(name);
         if (!attr) {
             return 0;
@@ -705,7 +705,7 @@ public:
         return stof(attr->value->toString());
     }
 
-    virtual float getAttributeValueAsFloat(int idx) const override {
+    virtual float getAttributeValueAsFloat(int idx) const /*override*/ {
         if (idx < 0 || idx >= (int)attributes.size()) {
             return 0;
         }
@@ -716,34 +716,34 @@ public:
         return stof(attributes[idx].value->toString());
     }
 
-    virtual const char* getNodeName() const override {
+    virtual const char* getNodeName() const /*override*/ {
         return nodeName.c_str();
     }
 
-    virtual const char* getNodeData() const override {
+    virtual const char* getNodeData() const /*override*/ {
         return nodeName.c_str();
     }
 
-    virtual bool isEmptyElement() const override {
+    virtual bool isEmptyElement() const /*override*/ {
         return emptyElement;
     }
 
-    virtual irr::io::ETEXT_FORMAT getSourceFormat() const override {
+    virtual irr::io::ETEXT_FORMAT getSourceFormat() const /*override*/ {
         return irr::io::ETF_UTF8;
     }
 
-    virtual irr::io::ETEXT_FORMAT getParserFormat() const override {
+    virtual irr::io::ETEXT_FORMAT getParserFormat() const /*override*/ {
         return irr::io::ETF_UTF8;
     }
 
-    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(int idx) const override {
+    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(int idx) const /*override*/ {
         if (idx < 0 || idx >= (int)attributes.size()) {
             return nullptr;
         }
         return attributes[idx].value;
     }
 
-    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(const char* name) const override {
+    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(const char* name) const /*override*/ {
         const Attribute* attr = getAttributeByName(name);
         if (!attr) {
             return nullptr;
@@ -751,11 +751,11 @@ public:
         return attr->value;
     }
 
-    virtual void registerDecoder(const std::string &algorithmUri, std::unique_ptr<FIDecoder> decoder) override {
+    virtual void registerDecoder(const std::string &algorithmUri, std::unique_ptr<FIDecoder> decoder) /*override*/ {
         decoderMap[algorithmUri] = std::move(decoder);
     }
 
-    virtual void registerVocabulary(const std::string &vocabularyUri, const FIVocabulary *vocabulary) override {
+    virtual void registerVocabulary(const std::string &vocabularyUri, const FIVocabulary *vocabulary) /*override*/ {
         vocabularyMap[vocabularyUri] = vocabulary;
     }
 
@@ -1706,81 +1706,81 @@ public:
 
     virtual ~CXMLReaderImpl() {}
 
-    virtual bool read() override {
+    virtual bool read() /*override*/ {
         return reader->read();
     }
 
-    virtual irr::io::EXML_NODE getNodeType() const override {
+    virtual irr::io::EXML_NODE getNodeType() const /*override*/ {
         return reader->getNodeType();
     }
 
-    virtual int getAttributeCount() const override {
+    virtual int getAttributeCount() const /*override*/ {
         return reader->getAttributeCount();
     }
 
-    virtual const char* getAttributeName(int idx) const override {
+    virtual const char* getAttributeName(int idx) const /*override*/ {
         return reader->getAttributeName(idx);
     }
 
-    virtual const char* getAttributeValue(int idx) const override {
+    virtual const char* getAttributeValue(int idx) const /*override*/ {
         return reader->getAttributeValue(idx);
     }
 
-    virtual const char* getAttributeValue(const char* name) const override {
+    virtual const char* getAttributeValue(const char* name) const /*override*/ {
         return reader->getAttributeValue(name);
     }
 
-    virtual const char* getAttributeValueSafe(const char* name) const override {
+    virtual const char* getAttributeValueSafe(const char* name) const /*override*/ {
         return reader->getAttributeValueSafe(name);
     }
 
-    virtual int getAttributeValueAsInt(const char* name) const override {
+    virtual int getAttributeValueAsInt(const char* name) const /*override*/ {
         return reader->getAttributeValueAsInt(name);
     }
 
-    virtual int getAttributeValueAsInt(int idx) const override {
+    virtual int getAttributeValueAsInt(int idx) const /*override*/ {
         return reader->getAttributeValueAsInt(idx);
     }
 
-    virtual float getAttributeValueAsFloat(const char* name) const override {
+    virtual float getAttributeValueAsFloat(const char* name) const /*override*/ {
         return reader->getAttributeValueAsFloat(name);
     }
 
-    virtual float getAttributeValueAsFloat(int idx) const override {
+    virtual float getAttributeValueAsFloat(int idx) const /*override*/ {
         return reader->getAttributeValueAsFloat(idx);
     }
 
-    virtual const char* getNodeName() const override {
+    virtual const char* getNodeName() const /*override*/ {
         return reader->getNodeName();
     }
 
-    virtual const char* getNodeData() const override {
+    virtual const char* getNodeData() const /*override*/ {
         return reader->getNodeData();
     }
 
-    virtual bool isEmptyElement() const override {
+    virtual bool isEmptyElement() const /*override*/ {
         return reader->isEmptyElement();
     }
 
-    virtual irr::io::ETEXT_FORMAT getSourceFormat() const override {
+    virtual irr::io::ETEXT_FORMAT getSourceFormat() const /*override*/ {
         return reader->getSourceFormat();
     }
 
-    virtual irr::io::ETEXT_FORMAT getParserFormat() const override {
+    virtual irr::io::ETEXT_FORMAT getParserFormat() const /*override*/ {
         return reader->getParserFormat();
     }
 
-    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(int idx) const override {
+    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(int idx) const /*override*/ {
         return nullptr;
     }
 
-    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(const char* name) const override {
+    virtual std::shared_ptr<const FIValue> getAttributeEncodedValue(const char* name) const /*override*/ {
         return nullptr;
     }
 
-    virtual void registerDecoder(const std::string &algorithmUri, std::unique_ptr<FIDecoder> decoder) override {}
+    virtual void registerDecoder(const std::string &algorithmUri, std::unique_ptr<FIDecoder> decoder) /*override*/ {}
 
-    virtual void registerVocabulary(const std::string &vocabularyUri, const FIVocabulary *vocabulary) override {}
+    virtual void registerVocabulary(const std::string &vocabularyUri, const FIVocabulary *vocabulary) /*override*/ {}
 
 private:
 
diff --git a/code/X3DImporter.cpp b/code/X3DImporter.cpp
index feaa0ca37..b60c68ae6 100644
--- a/code/X3DImporter.cpp
+++ b/code/X3DImporter.cpp
@@ -57,6 +57,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // Header files, stdlib.
 #include <memory>
 #include <string>
+#include <iterator>
 
 namespace Assimp {
 
@@ -75,8 +76,32 @@ const aiImporterDesc X3DImporter::Description = {
 	"x3d x3db"
 };
 
-const std::regex X3DImporter::pattern_nws(R"([^, \t\r\n]+)");
-const std::regex X3DImporter::pattern_true(R"(^\s*(?:true|1)\s*$)", std::regex::icase);
+//const std::regex X3DImporter::pattern_nws(R"([^, \t\r\n]+)");
+//const std::regex X3DImporter::pattern_true(R"(^\s*(?:true|1)\s*$)", std::regex::icase);
+
+struct WordIterator {
+    static const char *whitespace;
+    const char *start_, *end_;
+    WordIterator(const char *start, const char *end): start_(start), end_(end) {
+        start_ = start + strspn(start, whitespace);
+        if (start_ >= end_) {
+            start_ = 0;
+        }
+    }
+    WordIterator(): start_(0), end_(0) {}
+    bool operator!=(WordIterator &other) const { return start_ != other.start_; }
+    WordIterator &operator++() {
+        start_ += strcspn(start_, whitespace);
+        start_ += strspn(start_, whitespace);
+        if (start_ >= end_) {
+            start_ = 0;
+        }
+        return *this;
+    }
+    const char *operator*() const { return start_; }
+};
+
+const char *WordIterator::whitespace = ", \t\r\n";
 
 X3DImporter::X3DImporter()
 : NodeElement_Cur( nullptr )
@@ -473,10 +498,15 @@ void X3DImporter::XML_ReadNode_GetAttrVal_AsArrB(const int pAttrIdx, std::vector
     }
     else {
         const char *val = mReader->getAttributeValue(pAttrIdx);
-        std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
-        const std::cregex_iterator wordItEnd;
         pValue.clear();
-        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::regex_match(match.str(), pattern_true); });
+
+        //std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
+        //const std::cregex_iterator wordItEnd;
+        //std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::regex_match(match.str(), pattern_true); });
+
+        WordIterator wordItBegin(val, val + strlen(val));
+        WordIterator wordItEnd;
+        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const char *match) { return (::tolower(match[0]) == 't') || (match[0] == '1'); });
     }
 }
 
@@ -488,10 +518,15 @@ void X3DImporter::XML_ReadNode_GetAttrVal_AsArrI32(const int pAttrIdx, std::vect
     }
     else {
         const char *val = mReader->getAttributeValue(pAttrIdx);
-        std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
-        const std::cregex_iterator wordItEnd;
         pValue.clear();
-        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::stoi(match.str()); });
+
+        //std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
+        //const std::cregex_iterator wordItEnd;
+        //std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::stoi(match.str()); });
+
+        WordIterator wordItBegin(val, val + strlen(val));
+        WordIterator wordItEnd;
+        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const char *match) { return atoi(match); });
     }
 }
 
@@ -503,10 +538,15 @@ void X3DImporter::XML_ReadNode_GetAttrVal_AsArrF(const int pAttrIdx, std::vector
     }
     else {
         const char *val = mReader->getAttributeValue(pAttrIdx);
-        std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
-        const std::cregex_iterator wordItEnd;
         pValue.clear();
-        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::stof(match.str()); });
+
+        //std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
+        //const std::cregex_iterator wordItEnd;
+        //std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::stof(match.str()); });
+
+        WordIterator wordItBegin(val, val + strlen(val));
+        WordIterator wordItEnd;
+        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const char *match) { return atof(match); });
     }
 }
 
@@ -518,10 +558,15 @@ void X3DImporter::XML_ReadNode_GetAttrVal_AsArrD(const int pAttrIdx, std::vector
     }
     else {
         const char *val = mReader->getAttributeValue(pAttrIdx);
-        std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
-        const std::cregex_iterator wordItEnd;
         pValue.clear();
-        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::stod(match.str()); });
+
+        //std::cregex_iterator wordItBegin(val, val + strlen(val), pattern_nws);
+        //const std::cregex_iterator wordItEnd;
+        //std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const std::cmatch &match) { return std::stod(match.str()); });
+
+        WordIterator wordItBegin(val, val + strlen(val));
+        WordIterator wordItEnd;
+        std::transform(wordItBegin, wordItEnd, std::back_inserter(pValue), [](const char *match) { return atof(match); });
     }
 }
 
diff --git a/code/X3DImporter.hpp b/code/X3DImporter.hpp
index 58faefb49..2d2d41fdb 100644
--- a/code/X3DImporter.hpp
+++ b/code/X3DImporter.hpp
@@ -57,7 +57,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "BaseImporter.h"
 #include "irrXMLWrapper.h"
 #include "FIReader.hpp"
-#include <regex>
+//#include <regex>
 
 namespace Assimp {
 
@@ -816,8 +816,8 @@ private:
     /****************** Constants ******************/
     /***********************************************/
     static const aiImporterDesc Description;
-    static const std::regex pattern_nws;
-    static const std::regex pattern_true;
+    //static const std::regex pattern_nws;
+    //static const std::regex pattern_true;
 
 
     /***********************************************/
diff --git a/code/X3DImporter_Networking.cpp b/code/X3DImporter_Networking.cpp
index 744d805ba..269c58ba3 100644
--- a/code/X3DImporter_Networking.cpp
+++ b/code/X3DImporter_Networking.cpp
@@ -51,12 +51,13 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 // Header files, Assimp.
 #include <assimp/DefaultIOSystem.h>
 
-#include <regex>
+//#include <regex>
 
 namespace Assimp
 {
 
-static std::regex pattern_parentDir(R"((^|/)[^/]+/../)");
+//static std::regex pattern_parentDir(R"((^|/)[^/]+/../)");
+static std::string parentDir("/../");
 
 // <Inline
 // DEF=""              ID
@@ -93,9 +94,25 @@ void X3DImporter::ParseNode_Networking_Inline()
 
 		if(load && (url.size() > 0))
 		{
-			std::string full_path;
+			std::string full_path = mpIOHandler->CurrentDirectory() + url.front();
 
-			full_path = std::regex_replace(mpIOHandler->CurrentDirectory() + url.front(), pattern_parentDir, "$1");
+			//full_path = std::regex_replace(full_path, pattern_parentDir, "$1");
+			for (std::string::size_type pos = full_path.find(parentDir); pos != std::string::npos; pos = full_path.find(parentDir, pos)) {
+				if (pos > 0) {
+					std::string::size_type pos2 = full_path.rfind('/', pos - 1);
+					if (pos2 != std::string::npos) {
+						full_path.erase(pos2, pos - pos2 + 3);
+						pos = pos2;
+					}
+					else {
+						full_path.erase(0, pos + 4);
+						pos = 0;
+					}
+				}
+				else {
+					pos += 3;
+				}
+			}
 			// Attribute "url" can contain list of strings. But we need only one - first.
 			std::string::size_type slashPos = full_path.find_last_of("\\/");
 			mpIOHandler->PushDirectory(slashPos == std::string::npos ? std::string() : full_path.substr(0, slashPos + 1));