In another forum, I found this solution relating to TiVo.

I deleted the iTunes Library.xml and iTunes Library.itl files in my music folder, restarted iTunes, and added My Music back. Problem fixed.

Only problem is that if you have a large library, it takes forever to reload your library.

I get the following error when I try to scan my library: "Song Sergeant could not read your iTunes Library's xml file because an error occurred. This usually happens because the incorrect file has been selected, if you think this is the case please choose another. 'Conversion of string failed. The s...