Error message "All Members"

Hello,
i get a error message when i want to see all my members:
Fatal error: Uncaught exception 'Exception' with message 'Could not find module.member_search.php' in /home/piercede/public_html/wp-12-12-12/wp-content/themes/photocrati-theme/pope/lib/class.base_module.php:179 Stack trace: #0 [internal function]: C_Base_Module->autoload('M_Member_Search') #1 [internal function]: spl_autoload_call('M_Member_Search') #2 /home/piercede/public_html/wp-12-12-12/wp-content/plugins/membership/membershipincludes/classes/class.membersearch.php(2): class_exists('M_Member_Search') #3 /home/piercede/public_html/wp-12-12-12/wp-content/plugins/membership/membershipincludes/classes/membershipadmin.php(1580): require_once('/home/piercede/...') #4 [internal function]: membershipadmin->handle_members_panel('') #5 /home/piercede/public_html/wp-12-12-12/wp-includes/plugin.php(406): call_user_func_array(Array, Array) #6 /home/piercede/public_html/wp-12-12-12/wp-admin/admin.php(151): do_action('membership_page...') #7 {main} Next exception 'Exception' with message 'Could not find module.member_search.php' in in /home/piercede/public_html/wp-12-12-12/wp-content/themes/photocrati-theme/pope/lib/class.base_module.php on line 179

I have installed the photo cratie theme.

Can you help me?
Eve