I seem to be having a problem with the SDK. I finally got around to downloading it today and trying it out. I can't seem to highlight any walls to texture them differently. I have used the Unreal Editor (for Unreal 2k4) a bit before and never had this problem. I can't seem to select anything really. If I use "ctrl" and clicking I can select the red boxes after about 20 tries, but I can't select any walls in my subtracted space. I have tried right/left clicking with ctrl, alt and shift and nothing works. Also, I have a fairly top end computer and the editor takes 15 minutes to load every time, not just the first time. If anyone could help me with these problems, it would be greatly appreciated.