Classifieds error on new install

Hi,

I have a new install of wp 3.3.1 with the classifieds plugin.

When clicking the ‘posted by’ link I get the following

Fatal error: Call to a member function get_options() on a non-object in /home/qrlocal/public_html/wp-content/plugins/classifieds/ui-front/general/loop-author.php on line 25

Please help.

Thanks