Hi dragnsteph,
I love your site and it is a great theme for what you are doing. The link really helped.
The categories that show in that spot are the categories associated with posts. The wiki has its own categories. The fix is pretty simple. You will want to use a child theme so you won’t loose the change when the theme gets an update. If you don’t know how to make a child theme then I’m happy to make it for you.
Copy the file content-postmeta-single.php
from the DarkElements theme directory to your child theme directory.
Change the line:
<?php printf( __( 'Category: %s', 'darkelements' ), get_the_category_list( __( ', ', 'darkelements' ) ) ); ?>
To:
<?php if ( is_singular('yada_wiki') ) { ?>
<?php printf( __( 'Category: %s', 'darkelements' ), get_the_term_list( $post->ID, 'wiki_cats', '', ', ') ); ?>
<?php } else { ?>
<?php printf( __( 'Category: %s', 'darkelements' ), get_the_category_list( __( ', ', 'darkelements' ) ) ); ?>
<?php } ?>
That code checks to see if it is a wiki page then it outputs the wiki category, otherwise does what it does now.
Let me know if you have any problems or further questions. Have fun.
David