My copy of MIDI guitar 2 was working but now if I try to change instrument it shows my AU instruments but when I click it, it goes back to NONE. I have rescanned my Plugins several times, still no joy. Any thoughts? Thanks
Found out this only happens when I have my audio interface plugged in ( Positive grid RIFF). If Ii unplug the interface , select an instrument and then plug the interface back in it works.