I have created an Access db to manage a busy transportation department. We've been using for about 15 months w/no significant problems. The db is on a network drive accessed by three users. In shutting down the db to repair as instructed in an error message, the db was somehow corrupted. Now when attempting to open this message appears, "The Microsoft Jet database engine could not find the object 'MSysDb'. Make sure the object exists and that you spell its name and the path name correctly." I've tried to repair by opening Access and using the TOOLS menu and the Compact and Repair Utility, but get the same error message. What can I do to recover this very important database?