diff --git a/gulliver/system/class.g.php b/gulliver/system/class.g.php
index 4857b9683..e32d94cd3 100755
--- a/gulliver/system/class.g.php
+++ b/gulliver/system/class.g.php
@@ -1208,9 +1208,13 @@ class G
 				G::LoadClass('serverConfiguration');
           		$oServerConf =& serverConf::getSingleton();
           		if (!(defined('SYS_LANG'))) {
-          			$syss = explode('://', $_SERVER['HTTP_REFERER']);
-          			$sysObjets =  explode('/', $syss['1']);
-          			$sysLang = $sysObjets['2'];
+          		    if (isset($_SERVER['HTTP_REFERER'])) {
+          			  $syss = explode('://', $_SERVER['HTTP_REFERER']);
+          			  $sysObjets =  explode('/', $syss['1']);
+          			  $sysLang = $sysObjets['2'];
+          			} else {
+          			  $sysLang = 'en';
+          			}
           		} else {
           			$sysLang = SYS_LANG;
           		}
diff --git a/workflow/engine/classes/class.serverConfiguration.php b/workflow/engine/classes/class.serverConfiguration.php
index f02787a50..d1e2a2926 100755
--- a/workflow/engine/classes/class.serverConfiguration.php
+++ b/workflow/engine/classes/class.serverConfiguration.php
@@ -55,10 +55,13 @@ class serverConf {
   private $lanLanguage;
   public $workspaces = array();
   public $rtlLang = array('ar','iw','fa');
+  public $filePath = '';
 
 
   public function __construct() {
-    $this->filePath = PATH_DATA . 'srvConf.singleton';
+    if (defined('PATH_DATA')) {
+      $this->filePath = PATH_DATA . 'srvConf.singleton';
+    }
   }
 
   /**
@@ -107,8 +110,10 @@ class serverConf {
    */
 
   function saveSingleton() {
-    $this->filePath = PATH_DATA . 'srvConf.singleton';
-    $size = file_put_contents ( $this->filePath, $this->serializeInstance () );
+    if (defined('PATH_DATA')) {
+      $this->filePath = PATH_DATA . 'srvConf.singleton';
+      $size = file_put_contents ( $this->filePath, $this->serializeInstance () );
+    }
   }
 
   /**