Jim, and Sail323....
OK, I found a simple stupid error.
In the process of converting the Windows build to Unicode, I commented out the call to open the serial
port, since it needed parameter conversion, wouldn't link, and I was working hundreds of similar problems. And I forgot this one. My bad.
Simple fix will be available in the next Beta. If any Windows builders/Garmin users are available, I could make a patch available for quick out-of-sequence testing, which may save us a step. Anyone up for this?