hi jeromy,
Upgrade to 11d or put 11d on another workstation or server and copy the BKF files over to it(inventory and catalog). You can restore from an 11d media server to a 10d remote agent server.
In 11d goto tools - options - catalog and uncheck the box to request all media. This will allow the catalogs to run and get a byte count. They will fail but you can restore from the bkf files. Ist never a good idea to backup .bkf file. You should have been running duplicate jobs. In 10d you have to have the entire media family online. If one bkf is overwritten or you dont have the all the media family present..becuase your jobs were most likely append/overwrite its never going to catalog in 10d. By design
http://support.veritas.com/docs/283356 <-10d
http://support.veritas.com/docs/270251
http://support.veritas.com/docs/280822
Hope this helps
---Cheers
shirmal