I must be missing something here, but here goes: When I'm in a sketch, and adding dimensions, sometimes the midpoint of an edge will "light up" (meaning i can use that as a reference). Ok, sounds good.. I click it... and *pop*, the dimension line thinks the point I just clicked (midpoint) is somewheres else completly.. ok, i'll just press "ok" and delete it later..*pop*, it goes somewheres else!, ok, so now I'm dimensioning a sketch line with a point that seems in the middle of nowhere! does anyone find this useful? or is my installation just messed up? .. Doing a midpoint relation seems fine.. but i cant actually add a dimension that gives a distance to a midpoint. Andre Richard