Plugins not loading in 3.1?
I put my plugin in the plugins directory, open the manager, click the box, reload, and it appears next time I click "plugins" in 3.0.5.
But it does not (appear in the plugins menu) in OS: macOS Mojave (10.14), Arch.: x86_64, MuseScore version (64-bit): 188.8.131.5213, revision: a18d446
I tried it with the "regular" tempo plugin, too, and it fails the same way.
Vexingly, when I open either in PlugIn creator and click "run", I don't see an error, but it works.