High School Years Issue

I apologize if this isn't the correct discussion forum for this; I'm unsure whether this is a bug or an issue with a script mod, and I wanted to know if anyone else is experiencing the same problem. 

When I join my teen sims at school, I get this pop-up: 

Seasons works perfectly, but this happens every single time I send my teen sims to school and join them. The gameplay also doesn't work correctly (i.e., task bar/timer). All that appears is that top box. I have a mod that says the UI Cheats mod is the issue, but no one else seems to have a problem with the mod, and the creator says it's an EA issue, but I haven't seen anyone else with this problem either, with or without UI Cheats. 

So I wonder if anyone else has a problem like this with High School Years? Or any other script mods that may or may not be causing it?