Directory plugin in MU: Fatal error: Call to undefined function get_page_template_slug() in

Hi!

I have setup a MU install and a few plugins with no problems.

Theme: U-Design

However after installing the directory plugin, the main site gives this error:

Fatal error: Call to undefined function get_page_template_slug() in /var/sites/a/ayushhealthcare.co.za/public_html/wp-content/plugins/directory/core/main.php on line 148

Any help would be appreciated.

PS: if there is any basic layout post/reply here please advise, as with 26 pages its is proving hard to find. Many thanks!