I'm having the same problem. It is only when trying to build walls, not other objects; although once you try to build a wall, the rest of building won't work either. Here's what the console keeps spamming: STACK TRACE-------------------------------------------------function: haveMaterial -- file: ISBuildingObject.lua line # 200function: DoTileBuilding -- file: ISBuildingObject.lua line # 142function: DoTileBuildingJoyPad -- file: ISBuildingObject.lua line # 425attempted index: modData of non-table: nullOnce the "attempted index: modData of non-table: null" shows up it starts again. Sidenote: I should also mention I am on build 23 in case it wasn't obvious. EDIT: Next to Joypad it is listing my Razer Lycosa (keyboard). Not sure if that's exactly what you were asking about a controller, but I don't have another controller attached.