In the absence of any ideas how to solve it, I'd suggest you ask one of the other players to e-mail you the map file. Normally I'd say get them to post it as an attachment here, but the attachments are broken at the moment.
bl_fully.rgb isn't the map, it's just the background graphic. You never get the map file, it's encoded in your turn file. Why you get errors for the filename, I have no idea.