I've ran into similar problem a while back.
Here is the fix I found from google.
http://groups.yahoo.com/group/palm-dev-forum/message/19610
-Ji
"Nesselhauf, John" <[EMAIL PROTECTED]> wrote in message
news:53458@palm-dev-forum...
>
> How do you share a serial port between applications. I am
> interested in letting two applications use the serial port
> at the same time. The documentation for the SerOpen command
> states that you can open the serial port multiple times and allow
> cooperating tasks to share the serial port.
>
> John.
>
>
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