You are inductively reasoning when you should be deductively reasoning. You may be right but for you to be certain, connect the serial cable to your computer, run a terminal emulaton progarm like Cresron's Viewport or Hyperterminal, press a button that will send a sring and see what shows up in the terminal emulation progarm.

There are any number of possible issues in Wizard coding,even the same code, if it was compiled a second time. I've seen Systembuilder programs that failed to connect the serial signal to the com port. So you could open Simpl Windows and check if this is the case.

But ultimately, the program could work and generate the code and the com port could be bad. Using a terminal emulation will allow you to deductively conclude what is happening and determine conclusinvely if you have a bad com port.

Have you tried moving the com port to the other one on the Prodigy?

Maybe I coudl work in tech support.

Alan