I recently upgraded to Illustrator v18.1.0 for OSX. The Kuler panel is gone. It is not available in the menu list: Window. I don't see any other method to invoke the Kule panel. Was the Kuler panel deactivated in this release?
I am logged in to Creative Cloud and am logged in to Adobe.kuler.com.
I have the exact same problem!
Go to "Window --> Color themes" and select and you have the Adobe Color CC. They change the name Kuller for Adobe Color CC.