AUM recording trouble
(I posted this question on the AUM forum a few days ago but so far nobody's replied...)
"Recording stopped unexpectedly. Error code -1"
I get the above error message fairly often when recording in AUM (preceded by the affected channel number, which is usually several or possibly all of them, each getting its own error message). I've tried, not very systematically and in any case without success, to work out if some particular apps or processes (other than recording, obviously) cause the error. The only thing I've noticed is that it seems to happen mostly when I adjust parameters in one or more apps while recording.
I'm running AUM on an iPad Air 2, latest iOS .... well, I haven't actually updated to the latest, but this error message has been appearing for quite a while, and usually I update to the latest iOS within a couple of weeks.
Any insights and, better yet, a solution would be much appreciated, thanks!