Shared values problem

Hello;

      I've have a situation where I was simply trying to do a new part, so I do a sketch & then start to alter the parametric dimension, & instead of getting the ablility to do it, a box comes up that says shared values wanting a name, & it puts then sends me into a equation box. I didn't access the equation tool or anything. What's going on? Is my template corrupt. I've worked with a view equations today, but this was a brand new file.

     I've attached the problem file.

         Thks, for any insight

               rob-d (Sw 2009-sp4)