Hi guys, sorry for leaving you stranded... In the airport right now on my way back to Scotland. I've heard that there's a couple of things which will help... Make sure the AC-7 Core is not already running when starting the setup... because multitasking is working now. Double click the home button on the iPad, hold the AC-7 Core icon, then touch the x to kill the app. If it still doesn't show up, try rebooting the iPad, sync with iTunes and try again... it seems the iOS4.2 update needs a little encouragement sometimes :) I'm not sure about the MIDI port errors, I'll try to find out for you. Cheers