So you're ok there.
Can see from your output that all tapes are active too, so we're good to go there also.
Is your scratch pool actually configured as a scratch pool?
- right-click on the volume pool 'Scratch' & select change. Ensure that the Scratch Pool box is ticked.
All these tapes are are configured as HCART3 - I presume all your tapes/volume pool are configured as such? (If they are different, eg HCART, then it would be that there are no scratch of the correct 'type')
***EDIT***
What exactly was you attempting to do when you got the "error message" on your attachment? (Sorry just noticed it despite the fact that it stands out a mile :o )
***EDIT2***
Realised you were trying to change the media owner - just tried it on our scratch (same result by the way)
***EDIT3***
From the help pages:
"...The media owner defines who can write to the volume. The volume must be assigned and owned (that is, it must contain valid backup images) before you can change the owner..."
***Last (honest) EDIT***
You could probably safely ignore the edits on this page ;)