Have you updated the graphics driver? What kind of computer? What operating system? Which motherboard? What monitor, and resolution? Custom build? Overclocked?
No, you need uscript. The crowd system only work for "decoration". Search for common controller and multiple pawn in the official udk forum, there is already a topic on this subject. ;)
without a decent connect tool, working bevel/chamfer and softsel's and a better selection of coordinate systems to pick from, it will still be a hopeless case, i'm afraid.