Use IGpsFeed.TestStatus to see what it returns.
Just one simple idea:
- do you have signal if you are using it in the office.
- maybe your GPS haven't fixed on satellite if it has a weak signal.
Test output of GPS with some SerialPort monitor or if you have NMEA parser, and find by hand tag that holds coordinates.
Be sure that you have valid baudrate before using it with AO, some OEM GSP modules are by default at 4800.
Regards