Message error in Avid Media Composer

Hello,
I have MC6 on a venture and then my pc got hanged. When I restarted and attempted MC6 again, it was showing me an error notification like this:

Error:
Error on xml setting file at 'C:UsersPublicDocumentsAvid Media Composersettingssite_Settings.xml'.
Reverting to the.avs file.
More information can be found on the console.
OK
Any thoughts on how to repair this? Maybe something has gone wrong. Did any of you face this kind of problem before? If yes, then please share your experienced and suggestions. It's a big help for me.
