My offline machine runs armory 0.88.1 on ubuntu 10.04 which now won't sign transactions from my online 0.92.3 on ubuntu 12.04.
For ice-cold reasons, I'd rather downgrade my online than upgrade my offline (is that a song?) but it's tricky. I've downloaded the .deb file for 0.91.2 but it leads to the software centre where it stops because it notices that I already have a more recent version. What can I delete/rename to let it install and revert to .91? I don't want to just clean it all off and lose the blockchain and databases. Thanks.
You can uninstall the existing version of Armory. It will leave your wallets and blockchain and databases intact. Nothing to worry about. Of course, you should have a backup anyway, but an install/uninstall cycle only affects the installation directories, not the directories holding wallets or databases.