3 files changed, 15 insertions, 3 deletions
diff --git a/engine/classes/ElggPAM.php b/engine/classes/ElggPAM.php
index 0681a909b..f07095fc1 100644
--- a/engine/classes/ElggPAM.php
+++ b/engine/classes/ElggPAM.php
@@ -53,11 +53,17 @@ class ElggPAM {
 
 		foreach ($_PAM_HANDLERS[$this->policy] as $k => $v) {
 			$handler = $v->handler;
+			if (!is_callable($handler)) {
+				continue;
+			}
+			/* @var callable $handler */
+
 			$importance = $v->importance;
 
 			try {
 				// Execute the handler
-				$result = $handler($credentials);
+				// @todo don't assume $handler is a global function
+				$result = call_user_func($handler, $credentials);
 				if ($result) {
 					$authenticated = true;
 				} elseif ($result === false) {
diff --git a/engine/classes/ElggPlugin.php b/engine/classes/ElggPlugin.php
index 3e43c8e81..c6ce2905f 100644
--- a/engine/classes/ElggPlugin.php
+++ b/engine/classes/ElggPlugin.php
@@ -36,8 +36,9 @@ class ElggPlugin extends ElggObject {
 	 * @warning Unlike other ElggEntity objects, you cannot null instantiate
 	 *          ElggPlugin. You must point it to an actual plugin GUID or location.
 	 *
-	 * @param mixed $plugin The GUID of the ElggPlugin object or the path of
-	 *                      the plugin to load.
+	 * @param mixed $plugin The GUID of the ElggPlugin object or the path of the plugin to load.
+	 *
+	 * @throws PluginException
 	 */
 	public function __construct($plugin) {
 		if (!$plugin) {
@@ -76,6 +77,8 @@ class ElggPlugin extends ElggObject {
 			// load the rest of the plugin
 			parent::__construct($existing_guid);
 		}
+
+		_elgg_cache_plugin_by_id($this);
 	}
 
 	/**
diff --git a/engine/classes/ElggVolatileMetadataCache.php b/engine/classes/ElggVolatileMetadataCache.php
index 24ae58d42..8a33c198d 100644
--- a/engine/classes/ElggVolatileMetadataCache.php
+++ b/engine/classes/ElggVolatileMetadataCache.php
@@ -279,6 +279,9 @@ class ElggVolatileMetadataCache {
 			),
 			'selects' => array('n.string AS name', 'v.string AS value'),
 			'order_by' => 'n_table.entity_guid, n_table.time_created ASC',
+
+			// @todo don't know why this is necessary
+			'wheres' => array(get_access_sql_suffix('n_table')),
 		);
 		$data = elgg_get_metadata($options);