holawill,
i would not expect the errors to change.

can you show a new screen shot of the page where the error occurs?

the print_r statement should show the value of $var variable; which calls the function zen_get_languages. for some reason that function does not seem to be populating the variable. to ensure you are at the right spot you can add this line right after the print_r statement:

die(__FILE__ . ':' . __LINE__);

once you do that, go back to the category page, and take a screenshot and post it here.

this is what my page looks like and i would expect something similar:

Array ( [0] => Array ( [id] => 1 [name] => English [code] => en [image] => icon.gif [directory] => english ) ) /var/www/ADMINN/includes/ckeditor.php:18