BUG - Notices found in the heartbeat call

- The attribute "workspaces" not defined in the class "serverConfiguration"
- Define the missing attribute in the class

workflow/engine/classes/class.serverConfiguration.php

@@ -53,6 +53,7 @@ class serverConf {
   var $logins;
   private $lanDirection;
   private $lanLanguage;
+  public $workspaces = array();
 
 
   public function __construct() {

workflow/engine/methods/services/processHeartBeat_Ajax.php

@@ -186,7 +186,7 @@ function buildData(){
     $licenseDomainWorkspace = null;
     $licenseNumber = 0;
 
-    if (file_exists(PATH_PLUGINS . "enterprise" . PATH_SEP . "class.pmLicenseManager.php")) {
+    if (file_exists(PATH_PLUGINS . "enterprise" . PATH_SEP . "class.pmLicenseManager.php") && class_exists('enterprisePlugin')) {
       $licenseManager = &pmLicenseManager::getSingleton();
 
       preg_match("/^license_(.*).dat$/", $licenseManager->file, $matches);