Hi Ampfixer,
I just upgraded to X2a as well and sure enough, the settings for my A-300 PRO were lost. I used the same settings JPS used above, but there were some additional things I needed to do:-
- On the Midi Devices in the Preferences menu I select A-PRO MIDI IN as well.
- On Driver Settings it had "lost" my UA-25EX (my audio interface) as Playback Timing Master, so no sound until I fixed this
- I pressed the Control/Surface Properties button on the toolbar, then pressed ENABLE. Only at this point did the A-PRO display Z3TA+ 1 which was the synth I had open at the time.
I tested the rotaries and they worked. I tested the transport buttons and they worked too.
I always thought it was counter intuitive that you have to enter A-PRO 2 as the In Port for the Controller Surfaces (this has caught lots of people out), but JPS has clearly shown this in his screenshots so if you've double-checked against all of his settings and checked my additional points you should be fine.
I have found it tricky to get the A-PRO set up in the past but this time it worked OK, I guess I've learned from past experience. The only thing I'm not sure about is whether it's necessary to have the B3 button pressed on the A-PRO (this is supposed to be SYNTH). I mistakenly had the B4 button pressed but everything still worked.
Good luck,
Simon