Stuck after saving Craig

[MobOmb]

I beat the hall monitor boss and when I open the detention room door the cinematic plays with all the kids running out, then it kicks me out of school (with a loading screen) like its supposed to. But then it shows for a fraction of a second the group outside the school and starts loading again with only the loading icon on a black screen and never stops. I tried switching buddy without success (though dont think I tried switching back to the first one).

 

2nd bug: I tried to continu with the attack on the school siding with cartman but cant get passed the barricade where you fart on torches because I never learned cup a spell. Do I learn it after saving Craig? (wich I can't)

[MobOmb]

Update: I tried going back to first buddy , then tried each buddy one after the other, tried saving during the cutscene and during the black loading screen and nothing works. I spend a while visiting every house before doing missions and theres not really any chance I'll start over. If it's not fix I won't finish this awesome game (outside of bugs)