Build Glitch, Stairs will not clip

Hey guys, I have been having a glitch with my Conan for a while now and have tried everything to fix it. While building a structure, the pieces will clip together without issue. However, when I try to place the stairs the item refuses to clip to the foundation piece when I attempt to place stairs. I have reinstalled the game several times, removed mods, reinstalled mods, and so forth.

Here is a screenshot of what I am seeing in the game.

Wrong forum, this is Age of Conan.