RAYZOON

Just curious if you look in the old folder you were using, is the 32 bit jamstix dll file there?
If so, you can probably delete it then move the Jamstix (64 bit only) dll file to It and it should work.
The problem was likely that if Cubase sees the 32 bit dll it blocks it BUT the 64 bit version has the SAME name so it effectively blocks Jamstix completely.
That is why I always say install 64 bit ONLY.

It's so odd the way different windoze systems require different settings. I had to turn off the HD setting in Cubase 11 on a Win 10 Pro PC to load the J4 interface without errors. Everything working great and I'm cranking out Midi Patterns to trigger in Gig Performer's Midi Player for live performances - using the Great sound of J4 Drums.

It's so odd the way different windoze systems require different settings.

Microsoft doesn't have the luxury of writing their OS based upon a proprietary hardware environment like Apple does. The fact that Windows works as well as it does with all of the legacy considerations required is actually quite amazing IMO.