fixing class definition, the constructor was defined as private function

workflow/engine/classes/class.memcached.php

@@ -44,7 +44,7 @@ class PMmemcached {
 
   private static $instance = NULL;
 
-  private function __construct($workspace) {
+  public function __construct($workspace) {
     $this->enabled = MEMCACHED_ENABLED;
     $this->connected = false;
     $this->workspace = $workspace;

workflow/engine/classes/class.pluginRegistry.php

@@ -102,7 +102,7 @@ class PMPluginRegistry {
    * param
    * @return void
    */
-  private function __construct() {}
+  public function __construct() {}
 
   /**
    * This function is instancing to this class

workflow/engine/classes/class.serverConfiguration.php

@@ -55,7 +55,7 @@ class serverConf {
   private $lanLanguage;
 
 
-  private function __construct() {
+  public function __construct() {
     $this->filePath = PATH_DATA . 'srvConf.singleton';
   }