Hi,
I bought iRig 2 HD a couple of weeks ago and downloaded all of the apps onto my iPad. I really wanted all of the features and functions of Amplitube 4 so i (reluctantly) sprung for a macbook air 2. I spent hours going around in circles trying to download the Auth Manager and trying to download A4. I was able to authorize Custom Shop but, when I manage to download A4, I can't use it; I get an unauthorized notice and when i open the app I get a continuous high pitched soccer whistle sound.
I believe that you can have Amplitube CS for iPad and Amplitube 4 as long as they are not used at the same time. ACS was fully shutdown on my iPad but I still could not download and use A4...any suggestions?