diff --git a/rbac/engine/classes/model/RbacUsers.php b/rbac/engine/classes/model/RbacUsers.php
index 56beb4f0d..3b662d873 100755
--- a/rbac/engine/classes/model/RbacUsers.php
+++ b/rbac/engine/classes/model/RbacUsers.php
@@ -193,12 +193,14 @@ class RbacUsers extends BaseRbacUsers
 
     public function create($aData)
     {
-        $pluginRegistry = & PMPluginRegistry::getSingleton();
-        if ($pluginRegistry->existsTrigger(PM_BEFORE_CREATE_USER)) {
-            try {
-                $pluginRegistry->executeTriggers(PM_BEFORE_CREATE_USER);
-            } catch(Exception $error) {
-                throw new Exception($error->getMessage());
+        if (class_exists('PMPluginRegistry')) {
+            $pluginRegistry = & PMPluginRegistry::getSingleton();
+            if ($pluginRegistry->existsTrigger(PM_BEFORE_CREATE_USER)) {
+                try {
+                    $pluginRegistry->executeTriggers(PM_BEFORE_CREATE_USER);
+                } catch(Exception $error) {
+                    throw new Exception($error->getMessage());
+                }
             }
         }
         $oConnection = Propel::getConnection(RbacUsersPeer::DATABASE_NAME);
diff --git a/workflow/engine/methods/authSources/authSources_ImportUsers.php b/workflow/engine/methods/authSources/authSources_ImportUsers.php
index d42ed6e62..bd2989327 100755
--- a/workflow/engine/methods/authSources/authSources_ImportUsers.php
+++ b/workflow/engine/methods/authSources/authSources_ImportUsers.php
@@ -68,6 +68,7 @@ foreach ($_POST['aUsers'] as $sUser) {
         $G_PUBLISH = new Publisher();
         $G_PUBLISH->AddContent( 'xmlform', 'xmlform', 'login/showMessage', '', array ('MESSAGE' => $oError->getMessage()) );
         G::RenderPage("publish", "blank");
+        die();
     }
     $aData['USR_STATUS'] = 'ACTIVE';
     $aData['USR_UID'] = $sUserUID;