Thanks,

When it decides to fail next time I'll try that but I would expect it to be a regular failure if it was a permission issue.

I'm currently working with PGMusic to see if we can figure out the cause, and a solution. But since it is pretty intermittent it may take a while to resolve the issue.

It may be related to either the Behringer XR18 digital mixer (with ASIO driver for audio) and/or the external Keton SD-4 MIDI synth interfaced with a USB to MIDI interface.

Burt