Hi-
I believe I found your crash report (if your email address is thomas@a1…) and it looks like a problem with the ATI graphics card drivers. If your video card drivers changed recently, you may want to change them back to whatever you used to have.
Otherwise you may need to do some trouble-shooting. One of the SketchUp sages (experienced folks) has a guide here.
(For other SketchUper’s reference, crash #4944)
Thanks,
Marc