I am attempting to restore a backup file from our server. I am able to backup and restore my current QBW file (QBW to QBB back to QBW). I am unable, however, to restore a previous QBB file. I've tried moving a previous QBB file to my hard drive and doing a restore from there, but again I am unsuccessful. When I attempt to restore, I get no error message. The program simply defaults to the "Open Company File" screen, and no new company files are listed. As a final note, if I hover over a recently created 2009 QBB file with the pointer a balloon appears with the correct Quickbooks version. If I hover over a previous 2009 QBB file, however, the balloon message indicates that the Quickbooks version cannot be determined.