tbb-firefox.exe crashes on startup

Whenever I start tbb-firefox.exe (whether through Vidalia or the .exe itself), it instantly crashes and prompts me with "tbb-firefox.exe has stopped working". This didn't happen in previous releases.

AppName: tbb-firefox.exe AppVer: 17.0.10.5051 ModName: nspr4.dll ModVer: 4.9.5.0 Offset: 000012b2

I'm running on a WinXP and can give more information (e.g. DxDiag) if necessary.

Trac:
Username: Lehona

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information