Thank you all on the PMDG team for this wonderful SU2. I seem to have a minor problem today on my initial test flight - as I am unable to connect the autopilot. It simply makes the AP disengage sound, and the light goes on for a small second and then gone? Very strange.

Dear "match_dk" (real name please? required, per forum rules)Check to see that your overhead generators are ONLINE. if they're not, you will not be able to use A/P or A/T.Cheers,

I had the same issue at first. Turned out to be a setting in FSUIPC. If Leferis's solution doesn't fix it, try and reset the defaults on FSUIPC. It worked for me :)