Note that I’ve installed two user accounts, an admin and a non-admin user.
The plugIn itself has (from top down) r/w, r/w, r/w, r, r while "magick has rights as shown in the screenshot (taken from the non-admin user)
What are the rights on your Mac? Select the plugin and type cmd-I to see.
I just made the rights to Read & Write on all accounts. They were Read Only for some. But still no luck. Have also tried to uninstall the plugin and reinstall it…I’m ready to give up!! haha
Are you on Catalina? Catalina seems to sometimes be messing up permissions. You can usually fix it following this guide.
Perhaps that is what you have already tried and it didn’t work for you…
If you do try that and it doesn’t work, the next thing I would look at is if you have any software running in the background that it trying to “protect” you. For instance, if you are running something like “BitDefender” it could be preventing the external scripts (like ImageMagick) from running and doing it’s thing.