I have been revising place names through Master Place List. After I change even a few then do maintenance, Reindex & Optimize I get the message: myfilename_ppv.dbf does not exist 482 REINDEX DATASETS. If I try to ignore I get a message "Project is in use elsewhere" (it is not). This has occurred repeatedly this afternoon, despite logging out of TMG V9, shutting down the computer, and repeatedly restoring the file from backup into a new file folder. Any solutions or suggestions?