Bensji

I solved it.

I just had to delete all the capitals in the Custom Post Type Names. Is this some sort of change? Before the udpate everything worked fine!

Thank you

I already found the issue:

It’s in my attempt to enable the thumnail:
I use:

<?php
add_theme_support( 'post-thumbnails', array( 'portfolio' ) );
?>

and that’s what causing the trouble.

Now I need to find how to fix it 🙂