ok guys, this is definitively, a bug, but I´m not reporting it though.
I dont mind starting over, and trying again. I´ve been reading about a bug that happens while loading, that corrupt the rest of the game, maybe i´ve came across with one of this, I dont know....
By the way, Psychonauts turned out to be one of the best games i´ve played so far, It has an original story, and I really enjoy its twisted style!
thanks guys for helping! bye!