Just updated Directory to v2.1.2.1. Receiving Fatal Error. Pls help :)

When selecting any category, a fatal error message appears: call to undefined function dp_get_taxonomy_vars() in /home/tutuolog/public_html/girlygirldirectory.com/wp-content/themes/default/taxonomy.php on line 12. So naturally, I opened the file and I haven't a clue what to do with it. I have custompress if that helps. The problematic website is girlygirldirectory.com Anyone?