Ah, yeah, it's ElPresidente's that's the issue then. Can't figure out where exactly the incompatibility is though
EDIT: Alright what the fuck, on_lab_pressed() is identical between vanilla and EPT, and Aric's doesn't even touch it... how is there even an issue here?!
Another EDIT: Welp, just got rid of laboratory.gd from EPT and somehow it works now. Whatever