Hi, 
After upgrading to 2.3 and changing some image size parameter, I'm having the following message on my categories:

Warning: array_slice() expects parameter 2 to be long, string given in .../components/com_k2/views/itemlist/view.html.php on line 351
Now only the image appears and I don't have any items listed.

Any idea from where this come?

Here is the line 351:

$primary = array_slice($items, $params->get('num_leading_items'), $params->get('num_primary_items'));

Here is the url: maisondutourisme.ch/index.php?option=com_k2&view=itemlist&layout=category&task=category&id=3&Itemid=98&lang=fr

Well, have seen so many results on google showing the same problem that I felt little bit hopeless.
So I have deinstalled / reinstalled K2 and recreate all the items. By chance they was 'only' 16...
And you know what? it fixed it!

I have the same problem, I tried to install and reinstall the component but it didn't help! However, when I refresh the page (F5) it all displays properly! Please, desperetaley need help!

Hi. Please make sure that the parameters you have set do fetch some items.

Victor Atanassov said:I have the same problem, I tried to install and reinstall the component but it didn't help! However, when I refresh the page (F5) it all displays properly! Please, desperetaley need help!

I actually found out that there is some global missunderstanding in the variables with K2 v2.3, sh404sef 1.20 and joomfish. Indeed before the refresh of the page, the k2 arrays and variables didn't fetch any values and thus returned empty and not displaying anything. Removing joomfish and reinstalling sh4040sef solved the problem for me, I will post when I again try to put joomfish how did I managed to solve it.

Lefteris Kavadas said:Hi. Please make sure that the parameters you have set do fetch some items.
Victor Atanassov said:I have the same problem, I tried to install and reinstall the component but it didn't help! However, when I refresh the page (F5) it all displays properly! Please, desperetaley need help!