I have c5 standard on XP Pro  My Carrara File Version is 5.1.0.57.  Most of the time it works..but it has started crashing for reasons I dont understand.  I'll usually be clicking on something and C5 just dissapears...process gone.  No error messages.   I also usually get the default user interface settings when I restart the app.  So...how do I resolve this?  Is there a log file I can read?  I have not asked for official support...do you email Daz or Eovia...and will they respond?

I'd also like to backup my usre prefs is someone knows where they are kept.

Thanks