When I try and dimension a sketch, two things happen: line properties show up on the right side of the screen and my arrow changes to a little mouse icon. The line or sketch doesn't dimension and the smart dimension mouse icon stays on, regardless of hitting escape. Sketches that I made on my functioning computer show up without dimensions and same problem persists on the faulty computer. It seems as if something fundamental to the program is not functioning. I can run simulations, motion, etc. but not dimension sketchs... Have tried uninstalling and reinstalling twice and no luck. Brand new dell workstation. Have read about this problem with other people and usually a clean install does the trick. Not for me. Any suggestions?