I'm trying to modify an old 2.0 rule, but can't even open it as I'm getting "Unexpected Error". It's purpose is to turn off our window lights, so it isn't something I look at very often. Now I want to add another lamp, and that's when I discovered the problem.
java.lang.NullPointerException: Cannot get property 'value' on null object on line 910 (mainPage)
I can of course create the rule again, but honestly I can't remember every detail of it. And it still works perfectly, that's why I haven't noticed the issue until now.
Any ideas I can try? Or is it easier/faster to just create a new one from memory?