Please make sure you have all updates installed.
Restore the files you deleted with Spybot – Search & Destroy: Run Spybot-S&D, select Spybot-S&D → Recovery from the left bar and restore all the files and entries which are in association with the item that should be restored.
After following these steps please try again. Be sure that all the Explorer windows are closed. You might to have to restart your computer for the changes to take effect.