When trying to copy an application into /Applications, I accidentally copied MyApp.app/Contents into /Applications, turning it into an executable package instead of a folder.
I have removed /Applications/Contents and made the app accessible as it should be (/Applications/MyApp.app/Contents), but /Applications did not revert to its former glory.
Currently, if I navigate to Applications in finder, it opens a terminal into /Applications :(
Edit: I realized Applications is now of type "package". I followed the directions here: http://www.switchingtomac.com/tutorials/how-to-restore-a-folder-that-has-turned-into-a-package-in-os-x/ to no avail.