Hey! I figured it out.
For some reason there were no media types in the list on the tape drive properties. Normally this list is populated with know media types and Read/Write are set to yes, by default. The drive properties in my system only contained *** with Read/Write set to NO and I couldn't change it. Some how this would le scratch media write, but not append to the tapes in my media sets.
I disabled the drive and deleted it. I then restarted the services for BE. When I opened the console the drive was already discovered and the media types list was fully populated, as it should be. I ran a test of my backup jobs and they are working fine.
I can't tell you how it happened. I'm just glad it's working now. I'll be keeping an eye on it though.
Ken - Thanks for the suggestions.
Message Edited by Rufus on 05-17-200707:19 AM