--- sites/all/modules/ctools/page_manager/plugins/task_handlers/http_response.inc	Wed Nov 10 12:33:19 2010
+++ sites/all/modules/ctools/page_manager/plugins/task_handlers/http_response.inc	Wed Nov 10 11:17:57 2010
@@ -112,10 +112,11 @@
   );
 }
 
function page_manager_http_response_admin_summary($handler, $task, $subtask, $page, $show_title = TRUE) {
   $task_name = page_manager_make_task_name($task['name'], $subtask['name']);
   $output = '';
 
+  module_load_include('inc', 'panels', 'plugins/task_handlers/panel_context');
   $display = panels_panel_context_get_display($handler);
 
   ctools_include('plugins', 'panels');