Here is something else... I kept getting stuck on the right side of the second doorway as you enter in where the secretary is located... I then found that your office sign model at about eye level on the right was the problem... I then set the polygon flag and whamo... problem gone... Then as I investigated I noticed two other things..., for example the columns on either side of the entrance also could use their polygon flag set...
I think that you might want to look at maybe setting the polygon flag on a lot of your models... Try this... fire up the game and then hit the F11 key, notice the hull box that is used for collision of a particular item... Then exit and go into WED and turn the polygon flag on then re-compile and fire up the game and go check out the item with the F11 key activated... I think that you will notice how great the collision will work on those model files that you change...
Also, I wonder why you have the set of two columns and plants (the island) behind the avatar at start are all set passable??? Is that really what you want... I suppose you did that for some reason...
Anyways, Enough for today... Tomarrows a brand new day! Later