diff --git a/workflow/engine/bin/cron_single.php b/workflow/engine/bin/cron_single.php
index de6d57f64..39ccef9ba 100755
--- a/workflow/engine/bin/cron_single.php
+++ b/workflow/engine/bin/cron_single.php
@@ -84,6 +84,7 @@ try {
     G::LoadSystem('dvEditor');
     G::LoadSystem('table');
     G::LoadSystem('pagedTable');
+    G::LoadSystem('httpProxyController');
     G::LoadClass('system');
 
     require_once('propel/Propel.php');
@@ -150,6 +151,7 @@ try {
     G::LoadClass('processes');
     G::LoadClass('derivation');
     G::LoadClass('dates'); //Load Criteria
+    G::LoadClass('spool');
 
     //Set variables
     /*----------------------------------********---------------------------------*/
diff --git a/workflow/engine/classes/class.wsBase.php b/workflow/engine/classes/class.wsBase.php
index 9181d8db3..6f0b619d6 100755
--- a/workflow/engine/classes/class.wsBase.php
+++ b/workflow/engine/classes/class.wsBase.php
@@ -2391,7 +2391,11 @@ class wsBase
 
                     if (isset($val['NEXT_TASK']['USER_ASSIGNED'])) {
                         $usrasgdUid = $val['NEXT_TASK']['USER_ASSIGNED']['USR_UID'];
-                        $usrasgdUserName = '(' . $val['NEXT_TASK']['USER_ASSIGNED']['USR_USERNAME'] . ')';
+                        if(isset($val['NEXT_TASK']['USER_ASSIGNED']['USR_USERNAME'])){
+                          $usrasgdUserName = '(' . $val['NEXT_TASK']['USER_ASSIGNED']['USR_USERNAME'] . ')';
+                        }else{
+                          $usrasgdUserName = '';
+                        }
                     }
 
                     $nodeNext['TAS_UID'] = $val['NEXT_TASK']['TAS_UID'];