Thank you for your quick response. I have since rebooted, and find I cannot replicate the problem, so I suppose it was a momentary glitch. In any case, I have OS x 10.0608 and build 625PXi. The problem occurred during interval identification when I tried to give a (correct) answer of perfect 5th. I ...

when using the custom tutor, I sometimes am unable to input an answer. I get an error message about an `access violation`. Any way to fix this? thank you, vk

I have a Mac (OSX) and have been using EarMaster on it via Parallels software for a couple of years. I recently downloaded the trial version of EarMaster for Mac and it works very well. I had the impression that I would could change to the Mac version without charge, but cannot see how to do this. I...