I know this was asked a long time ago but I was just about to take my keyboard apart when I thought ....I'll just see if someone else has had this problem... and of course I had assigned a note to some control without realising it. Actually I do this fairly often and it always takes me a while for my dim mind to arrive at the solution. Today I got here via Google. So many thanks to Sequentialist for asking this question, and asking it in exactly the same way I put into Google so it came up first, and thank you Jordi for the answer, and thank you David and everyone for this amazing resource