Hi, 
I have a special prob with JCE under K2. 
It`s JCE 1.5.7.4 and 1.5.7.4. plugin - and K2 v2.4.1 
Only into the frontend items I see show/hide - but nothing happens (click etc.)
It`s better for my customer to write into the frontend - but not without the editor icons.
Everything works into the backend and under joomla. 
Thx for help.