K2 doesn't work after upgrade to J3.3

Hi,
I wounder if you seen this issue before. League template was upgraded to latest J3.3.6 from J2.5. everything looks to be fine except K2 items. Cannot create, edit or do anything with this module. It just give me a blank list. I guess that something else cause this issue and not relate to template or J3.3, since i have another website with same template and it works fine.
I tried to change the jquery version to higher than 1.8 but nothing work...
Please let me know if you have any clue how to fix it.
Thank you.

Another components that i use:
Widgetkit
News GK4
Event Gallery
J2XML

New J3.3.6
http://new.ola-aventura.ru/

Old J2.5
http://ola-aventura.ru/

Never mind, found the issue... it was plg_gk_typography plugin, uninstalled and all back to work
Thanks