When i want to add an item, i'm getting this error

SQL=SELECT `catid` FROM jos_k2_additional_categories WHERE `itemID` = {intval()}

I read there is somewhere a solution, but just don't find it on the forum,
anyone can help me?

Thx!

Hello,
The k2_additional_categories table is from another extension called K2 additional categories. You can try upgrading it or you can ask the extension developer for support.

Thx, solved the problem
I've installed additonal categories for k2 and that caused the problem.

But Error is fixed now!

Oh my god. I'm having the same problem! Thank you for this solution! I'm going to try it out.

What exactly did you do? Please help :(