3
Aha, I changed to English now and then I get nice texts.
I am using swedish language so I guess I just have to create translations for swedish and put in the directory of the non working modules.
As a temporary solution I copied the english directory to a new one called swedish and I get the english texts.
I got the error in e.g.
/cjaycontent/admin/index.php
But it was the same for several of my modules.
Thanks ackbarr!