When I try to save a K2 item in one of my sites I get the following message:

"1136 Column count doesn't match value count at row 1"

I never had this before. The rest of my site is working fine, just with saving K2 items. In my "Extensions Manger" the database is fine and doesn't give warnings. I compared the structure of my _k2_items table in phpmyadmin with other websites and see no differences.

Anybody an idea what this could be?

Hello there,

Is this the entire message?

Yes it is.... I would have expected to get more info regarding the table in the error message but there is no more information.

Is anything recorded in the error_log?
Did this happen out of the blue or did you install any extensions?

It didn't really happen out of the blue.... I had a bigger problem before because I couldn't login in the backend. Because of this I did a new installation. After that everything worked fine again accept for this.

Is this info more helpfull?

Still, it doesn't define which query is failing.
Are you using any 3rd party K2 extensions?