Dynamic Filter [Support Thread]

[Design75]

I am running 1.5.4

This line

// bof dynamic filter 1 of 2
  include(DIR_WS_MODULES . zen_get_module_directory(FILENAME_DYNAMIC_FILTER));
// eof dynamic filter 1 of 2 

Produces this error:
[27-Jun-2015 00:04:34 EST5EDT] [client 64.7.70.206 ] PHP Fatal error: Call to undefined function zen_get_module_directory() in /big/dom/xscholledresses/www/includes/classes/split_page_results.php on line 28

What is wrong?

what version of the module are you running?