HI,
Seems to be an issue with the latest version of Analog Lab that results in stuck keys when you start the application up or change sounds.
This means that you have to find the note that makes the noise and touch or hold it down in order to stop the noise. Once it stops it can then be used as normal.
I'm using the 61 Laboratory sold with the original Analog Laboratory. Other than this the keypad functions as normal and works perfectly with the V synths.
Don't have this issue in any other or app, Arturia or otherwise .
Thanks, Stuart