If the sample file loaded properly then it sounds like there's an issue with the json file from the plugin. Can you post it here, or DM it to me on Discord? jawslouis#7967
Oh it's all good now! I think my laptop (it's a little old) went wonky for a bit. I went ahead and uninstalled and reinstalled both the quick launcher and the various apps/plugins, and also saved the .json file in a new location, and it worked after that. Thanks for taking the time to reply!