In WED, I created a new level/world. I added the house and the SF_Woman to the level/world. In Map Properties, I clicked on "New Script" and chose "Shooter Project". I assigned "PIBiped01" action to the SF_Woman. I saved the level, compiled the level, and played the level. I went through the walls! The house was created as MDL file and when I clicked on the house in WED, I don't see any properties that are available for cubes. How can I stop going through the walls? I think that the "A7 WalkThru Project" is really "A6 WalkThru Project".