Fixes this app for NC22, released as-is.
Manual installation required, this is your own responsibility.
INSTALL INSTRUCTIONS:
Way 1. Slap the whole preview generator folder into your apps, enable, should work.
Way 2. Copy/Paste the following one-line change to upgrade your version to NC22 161c344
(This is the easiest method, most likely!)
Devs have said it 'seemed to work' on NC22, so expect this to be updated until actual functionality breaks. I will in no way shape or form provide bugfixes, features or other changes.