Ever since I first connected a computer with Rig-Manager to my profiler there as been problems. Random lockups and transfer/synchronisation that never finishes has been the order of the day. And if I happen to forget that the computer is attached and it finally goes into hibernation or other form of powersave-mode I can be certain that the KPA will lock up sooner rather than later.
It shouldn't be like this. Any computing-device with a USB-port should be able to take any abuse thrown at the USB-port, except for deliberate misuse of implemented communications protocols. You can not for example bar an application that pretend to be rig-manager and deliberately alters or deletes content on the KPA. Incomplete, incorrect or unknown activity on USB OTOH could possibly trigger some form of error-message, but should not be allowed to interfere with normal operations. Any other behaviour is a bug that needs addressing.
I just hope that the problem is in Kemper's code and can be fixed. However, since the bug(s) affecting USB have survived for so long I suspect that the root cause may be found in whatever platform the KPA is building upon, possibly never to be fixed.