I am using alt-x (measure) then S.5 (area/per) to get square footage on a plan. No matter if I choose cont. search, rectangle, or both unchosen to trace around the perimeter (my preferred method of course), I keep getting 0 sq. ft. and 0 cubed feet. I dooooo get the perimeter measurement though. Could this be a setting? Or is it more likely a corrupted file?
You might want to run the Repair tool on that file? Open DataCAD and instead of Open a file, select the Repair from the same menu on the problematic file.