Trying to interested rar and fastener files, tried both winrar and 7zip, both merely make available me a "cannot undo output file" message. Any design?
Answers: Sounds resembling the database is corrupt, however I recommend using 7-Zip. 7-Zip is an initiate source report archiver next to large compression ratio.
7-Zip have a strong community funding and unlike WinZip and WinRAR is completely free (contrary to popular belief WinRAR and WinZip are not free though you can use the trial period indefinitely).