Blocked a frame with origin null from accessing cross-frame something something

One of the techs might have an idea of what you’re talking about, but to have a significant chance at help, you’re going to be a lot more specific. This sounds like you’re messing around with the JavaScript and broke something.

Taking a wild guess, you tried to edit the wrong file. I’ve got a guide here that should hopefully get you started with coding in ChoiceScript.