Hi john and larry - thanks so much for continuing to think about this.

John - I tried setting the midi default to SampleTank and got the same bad results.

Larry - yes, I discovered the .dll file for SampleTank a day or two ago but I forgot to mention it so, unfortunately, that's not the issue.

The closest I can get is setting Audio preferences to ASIO. That, at least, will get the SampleTank to play in the synth panel but then it's silent in RB.

BTW I hate ASIO. I can't even play youtube videos or the Windows Media Player when I have RB open with ASIO as the auidio driver.