Help.. Again :)

[FlawlessHappiness]

Check names again. Also there is no reason in calling the function 3 times with 3 different scriptareas. Just make one:

void OnStart()
{
AddEntityCollideCallback("Player", "door_smash_area", "func_slam", true, 1)
}

void func_slam(string &in asParent, string &in asChild, int alState)
{
PlaySoundAtEntity("", "react_breath_slow.snt", "Player", 0, false);
PlaySoundAtEntity("", "react_scare", "Player", 0, false);
PlaySoundAtEntity("", "close_door.snt", "Player", 0, false);
GiveSanityDamage(5.0f, true);
SetPropHealth("door_smash_1", 0.0f);
SetPropHealth("door_smash_2", 0.0f);
SetPropHealth("door_smash_3", 0.0f);
GiveSanityDamage(5.0f, true);
}