It may be a problem with the script's 'coloff' positioning--I'll have to check. See, the script tells the door when to turn off collision so the player can walk through (effectively after the open animation plays). Nonetheless, we'll have to see.
I'll edit the post after I've taken a look at the script.
EDIT: After taking a look at it, it really doesn't show any problems--the collision turns off after the animation is played. I'll look further into it, but sorry I couldn't help you right now.
Evil has a new name. Demo out now!