Ok so I put the door in again, without any PM states. Made the main animation Opening, which in the preview shows the door opening (did the animation in 3DS Max)... set to play automatically, and the animation doesn't play. I've never really dealt with animation before, so I'm confused as to why it's not working even then.
Edit: I managed to skip the animations and just add the door to an empty child object with its pivot point at the edge of the door, then use a Y rotation. It's not pretty, as there is no blend but it gets the job done I suppose.
So it repeats if my character is near the edge of the bounding box collider... is there an easy way to require a button press to open the door rather than automatically opening when I enter the trigger area?