Why won't my Roland D-50 work on MainStage 2
I plugged my Roland D-50 into my macbook pro as a midi device and when I play it on Mainstage 2 I encounter several problems:
1. My keyboard will play notes but will cut off immediately
2. Even after I map my sustain pedal in, I can never hold a note
3. Mainstage recognizes my keyboard and recieves information when I press buttons but won't learn the buttons to any functions
I have no idea what to do or how to fix these problems. I am a complete noob to Mainstage and midi so any help and advice would be greatly appreciated.
MainStage, Mac OS X (10.7.2)