/**
* Implements hook_menu_local_tasks_alter().
*/
function forum_ng_menu_local_tasks_alter(&$data, $router_item, $root_path) {
global $user;
// Add action link to 'node/add/forum_ng' on 'forum_ng' sub-pages.
if ($root_path == 'forum_ng' || $root_path == 'forum_ng/%') { <---- HERE
In
forum_ng.module
the path referenced is wrong: