Hi Mike,
I'm having exactly the same problem using my keyboard through the Ketron SD2.

I've been struggling for over a week now... I've done Return to Factory settings a dozen times (both MOST and ALL). I've reloaded BB2017, I've reverted back to earlier Preferences that I've saved - nothing.

I've never had a problem with the regular updates over the last 10 or 15 years, but this one is testing my patience. If I knew that it would work properly I'd revert back to BB2016, which worked perfectly.

I'm using my keyboard through an Edirol UM1x and into the Ketron from there.

Hopefully the Support Desk or one of the forum gurus may be able to help us.

Cheers,
Keith