After good advice here, I successfully moved Wingate from an old NT4 server to an XP Pro workstation on the 16th October. I did the move by installing 5.0.10 on the XP machine (we were on 5.0.7 on NT4), then applying the registry from the old installation to the new. After the expected syslog error messages, Wingate sorted itself out. Wingate is now working fine, but not logging anything. The (very short) logs show the various services stopping and starting a few times as I restarted Wingate and rebooted the computer after applying fixes, but after one of the stops they show no more starts.
Any ideas?