Modified Version of Qt-485 (sans Q3Support): QtGui4.dll and QtGuid4.dll
Better error reporting for the "Snake River" Instability ("failed to create dibsection").
Phil Weinstein, CADSWES, 8-28-2013

Change to file c:\riverware\tools\Qt-485\src\gui\styles\qwindowsxpstyle.cpp, near line 394 in buffer():
Additions shown in Red. 

// Create the pixmap
bufferPixels = 0;
bufferBitmap = CreateDIBSection(bufferDC, &bmi, DIB_RGB_COLORS, (void **) &bufferPixels, 0, 0);
GdiFlush();
nullBitmap = (HBITMAP)SelectObject(bufferDC, bufferBitmap);

if (!bufferBitmap) {
   DWORD dwError = GetLastError();
   qErrnoWarning(dwError,"QWindowsXPStylePrivate::buffer(w,h), failed to create dibsection");
   bufferW = 0;
   bufferH = 0;
   return 0;
}
if (!bufferPixels) {
   DWORD dwError = GetLastError();
   qErrnoWarning(dwError,"QWindowsXPStylePrivate::buffer(w,h), did not allocate pixel data");
   bufferW = 0;
   bufferH = 0;
   return 0;
}