Never even noticed it had such a thing, but....
Description:
Stopped working
Problem signature:
Problem Event Name: APPCRASH
Application Name: NifViewer.exe
Application Version: 1.0.0.0
Application Timestamp: 467c00c7
Fault Module Name: KERNELBASE.dll
Fault Module Version: 6.1.7600.16385
Fault Module Timestamp: 4a5bdfe0
Exception Code: e0434f4d
Exception Offset: 000000000000aa7d
OS Version: 6.1.7600.2.0.0.768.3
Locale ID: 1033
.... it doesn't work for me either