Hi @vmajor
A type conversion error is happening in the XML parser when the byte count passes 2^31 on Windows which results in a negative byte index. Here’s a quick and dirty fix for you to use, assuming you can do a local build, while a more rigorous solution is worked out. It won’t get you past the 4Gb file size limit on Windows but it will load past the 2Gb point. I hope that helps.
vtkTypeInt64 vtkXMLParser::GetXMLByteIndex()
{
XML_Parser parser = static_cast<XML_Parser>(this->Parser);
#ifdef _WIN32
unsigned long result = XML_GetCurrentByteIndex(parser);
return result;
#else
return XML_GetCurrentByteIndex(parser);
#endif
}