I was having issues with my AutoCAD program and had to uninstall then reinstall AutoCAD Civil 3D 2011. I was drawing in the Civil 3D workspace before I had to uninstall, now when I try to swap my workspace I only see 2D Drafting & Annotation, 3D Basics, 3D Modeling, and AutoCAD Classic. It seems to have completely lost the Civil 3D workspace. Has anyone else experienced this problem? How do I fix it?

yes i had same problem yesterday. i could not find a solution so i just restored my computer to the last time it worked and now its fine