+ AA6YQ comments below
On every startup Commander is twice displaying an error window saying the comport for my xcvr is invalid.
+ That error report comes from Windows; Commander is just relaying it.
Device manager shows the comport, an Edgeport-4 four port device, all 4 ports are listed. Other devices connected to different Edgeport ports act normally.
Pressing Commander - Config - Reset Radios immediately connects Commander to the radio via the correct port 4 that it could not find a moment ago.
This failure is relatively recent, maybe the past year and I've just ignored it til now. Hoping someone can help.
+ Edgeport Technical Support is the most likely source of help. At minimum, be sure you're running the most recent Edgeport device driver.
I can email an error log file showing the failures and also the Reset Radios result.
+ The errorlog would contain no more information than what you've reported above: Commander asks to open the serial port, and Windows refuses to do so.
73,
Dave, AA6YQ