[amsat-bb] SatPC32 and SDX won't talk

I have a Windows 7 Inspiron desktop. I just installed the SatPC32 for GS-232. When I start SatPC32, it does not automatically also start SDX as on my other computer. I can start SDX manually and can use the "manual input" thing on SDX to speak with the GS232, reading current position etc. But when I click up R+ SatPC32 has no contol over SDX and the rotors do not move when I tell them to--like selecting "park." What to do? Other features in SatPC32 seem to be working.

Larry W7IN