I have upgraded to APM 2.2.1 via APM planner.
I am running two XBees 2.4Ghz at 57600 and they work great in loop back, not one dropped packet.
All config is default.
When I try to connect using the latest version of HKGCS I get the startup messages, but then I only get the Mavlink heartbeat, I don't get any GPS, attitude or other data.
I'm pretty sure I've changed something, but I can't think for the life of me what. I've tried two laptops and a stock new installation of HK GCS.
Appreciate any help.