How to enable CTRL+4/5/6? On Mountain Lion 10.8.2, when I use the Keyboard Viewer, I can see that Ctrl+1, Ctrl+2, Ctrl+3 register correctly when I type them.

Ctrl+4 or Ctrl+5 however, only show the Ctrl key being hit and the numbers ignored.

How can I enable all the Ctrl+# keys?

I don't really need them for spaces - rather, I need all the keys available for SC2 (FWIW, Ctrl+1, Ctrl+2, Ctrl+3 work fine in SC2, but the higher numbers don't).
I had a similar issue of unresponsive Ctrl+3 and Ctrl+4 keystrokes using OS X 10.8.4 and found a solution that worked for me using information from this answer.


Open ~/Library/Preferences/com.apple.symbolichotkeys.plist (I used XCode).
Update keys for the shortcuts which are giving you trouble by switching enabled to NO. I switched 120 and 121, which represent Ctrl+3 and Ctrl+4. I am not sure about Ctrl+5 or Ctrl+6.
Restart your computer.


Hope this helps!