I am using Cadian 2012 patch 1.0.3.38. The problem is the following. Go to Layout space; then create a viewport to show your drawing. When you are in the viewport you have to manage the scale of the view. This should be done using the command "zoom/scale". This command is not working; in fact it does not accept any value so it is not possibile to set the drawing in the chosen scale. Please reply if more clarifications are needed. Thank you and regards. L.A.