I generated unsigned_monero_tx on a disconnected computer, and copied it to a connected one. I placed it in my home directory, and ran
submit_transfer. This gave the error:
Error: Failed to load transaction from file
which is not a helpful error message.
I compiled the software from master (5fbfa8a65663e807c6500ae9485e898df9b7c470) because I read that the offline signing functionality is broken in the current tagged release (!), and because my old monero softwares all stopped working, because apparently they expect to be continually updated (!!).
The content of my
signed_monero_tx file begins with the text "Monero signed tx set".
How do I broadcast it using the monero software?
Edit: stackexchange has asked me to edit the question to explain how it is not answered by How do I use cold transaction signing?.
That q+a describes how to do offline signing with things working. My question is asking about a case of the software not working. A bug, glitch. It fails. That is what my question is about.