Hi Paul,
We've been over this back in 2009. It's not the clock or active sense that the S2 sends out when it's idle. Option b), it only crashes when:
- 650 is connected to S2
- turn 650 on
- wait a bit
- turn on S2
So it is something that the S2 sends on boot. I've sent you a log file back then from a midi monitor. (Also sent it to Jeffrey last week.) I'm attaching it here again.
Kind regards,
Ben