I'm trying to open a assembly file wch  was at good condition when i saved it yesterday.. Today i tried to open it and getting this error "An error was encountered while trying to open your file.  Contact Technical Support for a possible solution".  Other files open fine.    I don't have any old backups, so I would really really really like to recover this version if at all possible.  Anyone have any suggestions?  I'm using Solidworks 2011 32bit.