If you plan to use your Compaq iPAQ H3870 Pocket PC 2002 with the Wireless GSM/GPRS Pack, make sure Bluetooth is disabled on the Pocket PC!
Otherwise you will get the following error messages:
Cannot execute WCS
The module is not available.
The port is in use by
another application or was
not closed. You may reset
your iPAQ to fix this
The point is that the suggested soft-rest helps, but only because it shuts down Bluetooth. So make sure next time you want to use your iPAQ for Bluetooth to fire up Bluetooth again. :-(
I hope to see a bugfix for this soon!
Cheers ~ Arne