no the hanging notes just occurred when using the key transpose button and a certain combination of key strokes
It would help if you could explain the problem in a bit more detail.
Basically it won’t load any notes into a sequence or arpeggio lower than C on the mid octave
When you enter the sequence, do you hear the notes lower than C? Usually the notes which are saved are being played.
and even if you get notes loaded it will drop them out randomly (not in random mode) and eventually ‘hang’ after a 30 seconds or so (sometimes, sometimes longer)…
So when you play the sequence sometimes notes are not played and there is a break? Or is the next note in the sequence played instead?
Are you playing the sequence using the internal clock or via midi clock sync?
I am asking all this because it might help me to determine the cause of you problem.