I saw a thread about a similar issue but it was closed because it was over a year old. I am trying to add some custom scripts to my game and even with a "barebones" function based on example code it causes this error message: "Error setting up custom sheet: TypeError: Cannot read property 'split' of undefined" My test script: on('add:graphic',function(obj){ return false; }); I'm wondering if something has changed in the api that I'm missing? Is this happening for others or just me for some odd reason? Thanks everyone!