Visual Studio 2013 : Xerces Segmentation Fault

I am really confused, Xerces 3.1.1 was running smoothly when I was using Visual Studio 2010, yesterday I updated to Visual Studio 2013 and now I get a segmentation fault within the Xerces DLL.

Note: I have clean and rebuilt Xerces and my code, including manually deleting intermediate files and it fails. Any suggestions are welcome as I am now getting frustrated :(

Code crashes on:

DOMParser::DOMParser( ) : m_parser( new xercesc::XercesDOMParser )
{
}

m_parser = xercesc::XercesDOMParser *m_parser;

Error message is: First-chance exception at 0x1202F110 (xerces-c_3_1D.dll) in UnitTests.exe: 0xC0000005: Access violation reading location 0x00000000.

If there is a handler for this exception, the program may be safely continued.

It's actually crashing at this point:

    void* const block = XMLPlatformUtils::fgMemoryManager->allocate
    (
        headerSize + size
    );