control-keypad won't switch spaces past 6
I have activated keyboard shortcuts up to nine spaces and they switch around fine so long as I'm using the keyboard numbers (i.e., along the top above the letters). If I use the keypad, however, only spaces 1–6 will switch out. 7, 8, and 9 only result in a warning beep.
I've looked to see whether there is some other keyboard shortcut assigned and can't find anything, so I really don't know why it's (not) happening. It's not a big deal, but I find it way more convenient to use the keypad than the keyboard numbers.
Any thoughts?
iMac, Mac OS X (10.7.5)