Just installed Joomla 3.3.6 and K2 Version 2.6.8 with Yunik Template.

Logged in with Super User and Admin rights.
I am unable to update changes to existing items or add new Items.
Save/Save & Close/Save & New buttons have no effect. However, I can cancel out. That's it.

I've checked and seen this error happening to others, but old posts and none of the solutions worked for me.

Thoughts?

Was this a quickstart package or a new install?
Also you are talking about the backend, right?