The workspace manager stopped working on my computer (Elementary OS Luna). I suspected it may have had something to do with installing Tilda (Terminal Emulator), so I uninstalled that:
sudo apt-get remove --purge tilda
However it still didn't work even after I removed and purged and reinstalled gala (I think that's the program responsible for window management):
sudo apt-get remove --purge gala sudo apt-get install gala
My issue is this: I can no longer switch workspaces, and although Super+S brings up the bar at the bottom (Workspace overview), it no longer shows any workspaces. Super+right and Super+left don't work either. The rest of the gala features work as they always have though.