Você está falando sobre a paleta de caracteres?
Ativá-lo nas Preferências do Sistema > Internacional > Menu de Entrada.
Que tal então: link
For some unknown reason, the international data caches can get corrupted and prevent Character Palette and Keyboard Viewer from appearing on the Input tab of the International System Preferences pane. This also breaks the Special Characters entry in the Edit menu of many applications, including the Finder, Safari, and Text Edit.
If this happens to you, go to System/Library/Caches folder and trash the following files (don't worry, they will be re-created when you restart your Mac):
com.apple.IntlDataCache.le
com.apple.IntlDataCache.le.kbdx
com.apple.IntlDataCache.le.sbdl
com.apple.IntlDataCache.le.tecx