I'm having the same problem also. I uninstalled and reinstalled three times with no effect.
This happened on 15Feb, 12
It started after I visited 1920's Berlin. I wandered into the train station and tried to get on the locomotive, to no avail. I then went into the car, and the viewer crashed. I started the viewer after a few hours, and I think it installed an update before launching. After that, it launched, most of the prims, and part of my chlothing became a pink-purple. I then did the uninstall-reinstall thing-no joy.
I'm looking for a place to inform tech support.