First of all, welcome to the Buttonizer Community! 🎉
That doesn't seem right! Are you using Buttonizer for WordPress or our standalone version? And is there any other error visible in the console?
We are aware of some issues with Google Analytics, this is something we'll work on soon as it's high on our list. As you mention you disabled the analytics, this happens when you have Google Analytics disabled, right?
Let me know 🙂