Windows 10, latest version of Cakewalk.
My SampleTank 3 install works fine as a standalone (using an iRig I/O Keys with the ASIO4ALL drivers). But when I load ST3 into a Cakewalk track, and use the master bus as the output, I can't get any sound at all. The onscreen keyboard responds to clicking, and also to the iRig's key presses, and there's indicated activity in the levels meter that shows that sound is being produced, but still, silence. Using the exact same input/output combination for other VSTs works fine. Mystifying and aggravating.