Sorry about the issue. Have you tried reaching out to the plugin manufacturer to know if this is a known issue for them? You could also try resetting your preferences. If you're using a multi-display setup, try opening the plugin using a single display.
Since this appears to be a Mac, I would assume it's once again where the secondary files associated with the script/ plug-in can't be loaded. Check the visibility of your Library folder and also the permissions on the relevant script folders.