Hmm, my vanity-address wallet problems continue

I selected a single UTXO and tried to send MAX with manully-set 135 sat/byte feerate:
Traceback (most recent call last):
File "/usr/lib/armory/ui/TxFrames.py", line 871, in createTxAndBroadcast
finalTx = ustxSigned.getSignedPyTx(signer=self.signerType)
File "/usr/lib/armory/armoryengine/Transaction.py", line 2635, in getSignedPyTx
raise SignatureError('Invalid signature while preparing final tx')
armoryengine.ArmoryUtils.SignatureError: Invalid signature while preparing final tx
(ERROR) Transaction.py:1488 - Signature in USTXI is not valid
(ERROR) Transaction.py:2634 - Attempted to prepare final tx, but not all sigs available
(ERROR) TxFrames.py:876 - Problem sending transaction!
Traceback (most recent call last):
File "/usr/lib/armory/ui/TxFrames.py", line 871, in createTxAndBroadcast
finalTx = ustxSigned.getSignedPyTx(signer=self.signerType)
File "/usr/lib/armory/armoryengine/Transaction.py", line 2635, in getSignedPyTx
raise SignatureError('Invalid signature while preparing final tx')
SignatureError: Invalid signature while preparing final tx
(ERROR) Traceback (most recent call last):
File "/usr/lib/armory/ui/TxFrames.py", line 871, in createTxAndBroadcast
finalTx = ustxSigned.getSignedPyTx(signer=self.signerType)
File "/usr/lib/armory/armoryengine/Transaction.py", line 2635, in getSignedPyTx
raise SignatureError('Invalid signature while preparing final tx')
SignatureError: Invalid signature while preparing final tx
Traceback (most recent call last):
File "/usr/lib/armory/ui/TxFrames.py", line 871, in createTxAndBroadcast
finalTx = ustxSigned.getSignedPyTx(signer=self.signerType)
File "/usr/lib/armory/armoryengine/Transaction.py", line 2635, in getSignedPyTx
raise SignatureError('Invalid signature while preparing final tx')
armoryengine.ArmoryUtils.SignatureError: Invalid signature while preparing final tx
It then (I think it was after this) started scanning. After an hour or so, same error.
This was the encrypted wallet I removed then restored, trying to get it to see that those "Right click to RBF" txs had actually gone through.