Hello;
I am having the same problem, I placed my question about 2 days ago. What do you have your protection and overwrite options set at?? Do you have more than 1 slot?? My problem is that once a tape is full and the job is still running it will not grab the next available tape. So I then get the same message you get. The only way I have gotten around it, is that I have to abort the current job and then my other jobs will run grabbing the next available tape.