diff --git a/php/classes/UserMgr.php b/php/classes/UserMgr.php
index 35e7c18..5b84185 100644
--- a/php/classes/UserMgr.php
+++ b/php/classes/UserMgr.php
@@ -276,9 +276,9 @@ class UserMgr
 					else {
 						// totally rewrite
 						if ($base->hasAttribute('isSimulation')) {
-							/*$centerNode = $this->makeSimulationBase($baseId);
+							$centerNode = $this->makeSimulationBase($baseId);
 							$center = new $baseId();
-							$centerNode->setAttribute('available', $center->monitor());*/
+							$centerNode->setAttribute('available', $center->monitor());
 						}
 						else {
 							$center = new $baseId();
@@ -334,18 +334,19 @@ class UserMgr
       
 			$this->paramMgr->xmlDom->formatOutput = true;
 			$this->paramMgr->xmlDom->preserveWhiteSpace = false;
-             
+
 			$BASE = $this->paramMgr->xmlDom->createElement('dataRoot'); 
 			$BASE->setAttribute('xml:id','myRemoteData-treeRootNode');
 
 			foreach ($this->paramMgr->Bases as $baseId) 
 			{    
 				$centerNode = $this->makeNewBase($baseId);
-				$BASE->appendChild($centerNode);  
+				if (isset($centerNode))
+					$BASE->appendChild($centerNode);  
 			} 
-			
+
 			$this->paramMgr->xmlDom->appendChild($BASE);
-			
+
 			return $this->paramMgr->xmlDom->save($this->paramMgr->xmlName);
 	   }  
 	}
@@ -353,11 +354,11 @@ class UserMgr
 	protected function makeNewBase($baseId)
 	{
 	// no data base description ; skip this data base  
-		if (!@file_exists(RemoteData.$baseId.'/base.xml')) return;
+		if (!@file_exists(RemoteData.$baseId.'/base.xml')) return NULL;
 
 		// can't read base.xml ; skip this data base
-		if (!@$this->baseExtXml->load(RemoteData.$baseId.'/base.xml')) return;
-		
+		if (!@$this->baseExtXml->load(RemoteData.$baseId.'/base.xml')) return NULL;
+
 		$base = $this->paramMgr->basesDom->getElementById($baseId);
 		
 		if ($base->hasAttribute('default'))  
@@ -527,7 +528,7 @@ class UserMgr
     
           	  	
 	public function init() 
-	{
+	{ 
 		if ($this->ddLogin() != 0) 
 			die('<h2>You are trying to log in as '.$this->user.'<br/> Please check that you entered a valid password</h2>');
             
@@ -573,12 +574,11 @@ class UserMgr
 		$this->setPath(); 		
 	
 		$this->userGrps = $this->getUserGrps();
-
+		  		
 		if (!$this->makeLocalTree())
 				die("Login for ".$this->user." failed: Can't make LocalParams.xml");;
-		//$ok = $this->makeRemoteTree();	                      		
-
-//die("BRE");
+		
+		$ok = $this->makeRemoteTree();	                      		
 
 		if (!file_exists(USERWSDIR.'Request.xml')) $reqMgr = new RequestMgr();
 		if (!file_exists(USERWSDIR.'Tt.xml')) $ttMgr = new TimeTableMgr();
--
libgit2 0.21.2