Amanda is not reusing tapes in my library. I have them setup to overwrite when 
it reaches the last tape but now I am getting this tape error. Any ideas? 
Thanks in advance.


*** A TAPE ERROR OCCURRED: [No writable valid tape found].
Some dumps may have been left in the holding disk.
Run amflush again to flush them to tape.
The next 3 tapes Amanda expects to use are: a new tape, a new tape, 
DailyTape-21.
The next new tape already labelled is: WeeklyTape-14.