Before, I love Evernote, I used to Evernote helper with short cut - <kbd>⌘</kbd> + <kbd>⌥</kbd> + <kbd>space</kbd>.

but, I can't use this anymore.

I just swept up all my data, re-install mavericks.

just changed Special Characters short cut to <kbd>⌘</kbd> + <kbd>⌥</kbd> + <kbd>T</kbd>. (it was <kbd>⌘</kbd> + <kbd>⌥</kbd> + <kbd>space</kbd>)

BUT, I still can't use this shortcut for Evernote helper.

Evernote only says -

The key combination <kbd>⌘</kbd> + <kbd>⌥</kbd> + <kbd>space</kbd> can't be used!
The key combination "command + Control + Space" can't be used because it's already used by a system-wide keyboard shortcut. (If you really want to use this key combination, most shortcuts can be changed in the Keyboard & Mouse Panel in System Preferences)

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but I already changed Special characters' shortcut. Help me....