Building/character collision issues

[Lindsey Ryals Warren 0]

Hi, guys.

 

I'm trying to create a ruined city out using the mosque towers and minarets from the religious prop subsection, but for some reason, if I have a minaret lying diagonally (say, it's up against a building), my player character can't move under or around it because of some strange invisible walls. Is there any way to fix these collision issues? I can post a screenshot if my explanation is unclear.

 

Thanks so much!

 

EDIT: Here's a video demonstrating the problem.