My first attempt at broadcasting an offline transaction with Armory kept silently failing. Logs show "ConnectionError: Connection to localhost DNE" despite Armory showing "Connected" status on the main screen and current block number.
This problem has come up quite a few times in the past, but it was so long ago I honestly don't remember if it was ever resolved. However, there have been some networking-related bug fixes since then. Please download 0.82.4 and try again:
https://github.com/etotheipi/BitcoinArmory/downloads which runs for a few seconds and then silently dies without logging anything. Same immediately after a reboot with bitcoin-qt running and up to date on blockchain. Any troubleshooting I should do?