2.57b Traceback error and crash switching to Maya preset from splash screen

I get a traceback error when switching the to Maya preset from the splash screen. When I try loading the preset from the User Preferences menu, I get the traceback again, and then Blender crashes.

I’ve tried reinstalling Blender, and Python 3.2. Running Vista-32

Ideas?

PS
I was not getting this error in 2.57

http://pixprincess.com/cg/albums/userpics/13310/traceback.png