Cannot generate audio with MT PowerDrumKit

[tcwalther]

I'm trying to use the free MT PowerDrumKit plugin with MrsWatson, but I only get a short, silent audio file (all zeros). It seems similar to #166, #281 and #288. I've tried this with both the latest release binary as well as building from trunk (commit dbbd637) today. I've created an error report with the --error-report flag that can be downloaded here: https://drive.google.com/open?id=1L9EPPvFUn-fTOT-UyB7xh3_9BAVZ9STq . It includes the VST and thus exceeds Github's upload limit for issue attachments, hence the link to Google Drive.

I would be very grateful for suggestions on how to debug this issue.