If you are using anything older than FOG 1.3.5 and have this error, please upgrade to 1.3.5 (or newer) or migrate to a new box that has 1.3.5 (or newer). For those that would like to migrate, this article is helpful: https://wiki.fogproject.org/wiki/index.php?title=Migrate_FOG
If you have this error on 1.3.5 or newer, please create a new thread in the forums. This thread is locked.