I found the archives and downgraded to 5.37 and this fixed the problem. Before going this route I tried 5.40 and 5.41 beta and both had the same issues with 'Peer suddenly disconnected'.
Strange that it this was only happening for one particular connection (1 out of 7). It would happen with every test. If you would like for me to beta test another version, I would be happy to try.
Bran