Hi, I did set up K2 categories and filled them - all fine and showed in the frontend when double checked. Even though not visible in frontend - everything looks fine in the backend. Now I am getting the following error:

Fatal error: Call to a member function getLanguageFilter() on a non-object in /home/xxxxx/public_html/components/com_k2/models/itemlist.php on line 702

K2 Version 2.5.4
Joomla l.7

Can anyone tell me how to go about to get them working on frontend again ? Thanks for support... I am not a total newby but I am not a pro either... :)

best regards
Monika

Solved the problem myself - for all those facing the same error:

I took the "old K2 itemlist.php" from the zip file and replaced via ftp the one on the server. It works now fine and the categories show in frontend again.