Question about, FadePlayerRollTo

[Death Icarus]

everytime i try to use it, it never works right. ive tried differnt combinations, and copied and pastes peoples script, and it always does the same thing. the characters head will turn sideways, but it just like vibrates real fast everytime. im not really sure whats going on.

anyone know what im doing wrong? or why its happening?
here's a small example of script i used and it happend.



FadePlayerRollTo(50, 220, 220);
SetPlayerCrouching(true);
FadeOut(3.0f);
ChangeMap("TestMap2", "PlayerStartArea_1", "", "",);