I came home, early, because I knew I'd blown the cake and would have to make a new one. The center collapsed. It's depressing. The whole disaster happened because I didn't realize the recipe I had was in no way suitable to the pans I was using and I had to make a second batch of cake to try to make it fit, and ... the time ... AARGH.
Anyway, it's now 10 PM and I am going to try to bake a cake YET AGAIN before I go to bed. I don't know why but when I bake under pressure I make far more mistakes.