Matthew Lilley

Thanks @lazka , I appreciate you taking the time to reply

Hi @Talal916 . I gave up on it to be honest. Recently I installed it on a newer mac and it was fine. Thanks for checking back in with me.

@Talal916 It's an M1. I'm using pycario in the context of this tool https://docs.manim.community/en/stable/installation/macos.html . I followed those instructions and everything worked fine

Thanks SO much @candideu !!!!

Hey. No one replied to me so never completely got to the bottom of it. I am however pretty confident now that it's just an error in their code.

Thanks @lukelbro . Forgive me, I can't see the difference between the Hamiltonian you wrote and my second one...maybe I just need some more coffee lol.

This problem has been fixed in more recent versions