I updated to ClockworkMod Recovery v126.96.36.199 and attempted to backup my BB 0.9 so I can re-flash to BD 8.1.1 - I get this error:
Backing up boot...
Error while dumping boot image
So I go into nandroid / backup and get the same error.
Not sure if it's happening to others or not, but I'm sort of bummed I can't save a BB to go back to it later.