Nothing in the right pane means the PLM did not even echo back the serial command. That is strange since the PLM had to return information about type of PLM, Insteon address etc. That information would not appear in the right pane as it is obtained before the Utility is full initialized. Does anything appear in the left pane when the Insteon address is entered into the EZIOxx tab??
I went back to some of the earlier posts. There is earlier post showing commands issued in left pane and nothing in right pane. If that is what is happening now I cannot explain. That would suggest the utility is not working in the operating environment.