I have tried to run the SerialChat example on a 9210 Communicator. It recognizes three ports: DATACOM::0, COM1 and IrDA. When I select anyone of those and try to initialize it, I get a PortInUseException (unknown application).
There is no other application running except the file manager from where I started the SerialChat.
What is using the ports? Is this a bug? Or what am I missing?