Have you tried the latest dev version?
getk2.org/assets/get/

Hi everybody...
I too have same issue with J 3.3.1
Tried dev version as well
Same error
"Fatal error: Class 'K2HelperPermissions' not found"

Anybody found solutions?

Krikor Boghossian wrote: Have you tried the latest dev version?
getk2.org/assets/get/

The issue is only with K2 2.6.8

I installed K2 2.6.7 and its work.

i tryed 2.6.7, i tryed dev, install, unistall... try everything.
Not work. Same error.

Which other extensions are you using?

nothing.
I just install joomla 3.3.3 and first try install k2.

@acouto acouto

Is the K2 2.6.8 installed on your system? What's the exact error message? Maybe something is wrong with your server setup. The file is located at components/com_k2/helpers directory. If the file is not there then that means that K2 has not installed properly which indicate a server setup/permissions issue.

i tryed first 2.6.8. Show the same error related in this topic.
So tried the sugestions that we have here (2.6.7 and dev)

In components show com_k2 and show the same error when i click in some k2 link menu.

You need to paste the exact error here. Have you checked for the file on our server? Does it exist in the directory i told you?

Topic title says solved but I don't see any solutions above.

Brand new Joomla installation 3.3.6, installed K2 2.6.8

Clicked on K2 component and got the following:

Fatal error: Class 'K2HelperPermissions' not found in /home/user1/public_html/demo4/administrator/components/com_k2/k2.php on line 39

K2 Smart Search plugin automatically disabled upon installation.

Any ideas?