I have restarted my Mac operating system but the Tray application is not showing up.
To relaunch the ColorMunki Display tray simply navigate to:
Hard Drive > Library > Application Support > ColorMunki > Display > Tools > ColorMunkiDisplay Tray.app
Then just double click on the application which will relaunch the program. To allow the application to automatically restart after you start your computer go to:
System Preferences > Users and Groups > Login and make sure that the ColorMunki Display Tray has a checkmark next to it.