Hi darren,
This is most likely a version comparison bug. This should be easy to fix on your end with a small edit to the plugin, or you can contact me at harmonicdesign.ca and I can send you a custom version that removes the check.
If you edit hdq-a-styler/index.php you will see a function hdq_a_styler_check_hd_quiz_active. This function makes sure that A) HD Quiz is installed, and B) that you are using a compatible version. I’m guessing the issue for your site is that now that the third decimal is two digits, it’s breaking the comparison.
Line 38 contains add_action('admin_init', 'hdq_a_styler_check_hd_quiz_active', 999);
If you delete the above line, you should be good to go!
