Unhandled exception at 0x0000000064E3A45A (Qt5Widgetsd.dll)

[happyRoll]

http://mview.sourceforge.net/
Mesh Viewer(Qt4 version).I was compiled it succssfully with vs2013 addin Qt5, but it throw this exception when I start debugging.

Unhandled exception at 0x0000000064E3A45A (Qt5Widgetsd.dll) in mview.exe: 0xC0000005: Access violation reading location 0x0000000000000008.

The cursor which in vs13 Call stack stops here and show some thing.
Qt5Widgetsd.dll!QScopedPointer<QObjectData,QScopedPointerDeleter<QObjectData> >::data() Line 135

I want to know what happened,and how to solve this problem.