IMPORTING TILESET PROBLEM IN VXACE

I've decided to use a Celiana tileset, and imported it into the editor, and set it up in the database. But there is a weird passability problem I'm running into. I've set the building section tiles to an X, but when I play I'm still able to walk on everything. The passability editing doesn't seem to be working? I'm using VXAce, and I'm sorry if you can't visualize what I'm talking about. I've already tested walking on the wall with passability off AND on, and no matter what, I still walk on top of the wall. Does anyone know why this is happening? It's just this tileset it seems, the default tileset works just fine! I need this tileset to work before I continue on with the game.

This is where the tileset I got is from: Tileset