diff --git a/webdav/Caldav_Backend.php b/webdav/Caldav_Backend.php
index 22d227dcf..3cf905e10 100644
--- a/webdav/Caldav_Backend.php
+++ b/webdav/Caldav_Backend.php
@@ -164,8 +164,8 @@ class MySabre_CalDAV_Backend extends Sabre_CalDAV_Backend_Abstract
 			$sekunde = mb_substr($dtstart,13,2);
 			$begin = mktime($stunde, $minute, $sekunde, $monat, $tag-1, $jahr);
 			$ende = mktime($stunde, $minute, $sekunde, $monat, $tag+1, $jahr);
-			error_log("getCalendarData unr: $unr dtstart: $dtstart");
-			error_log($begin.'/'.$ende);	
+			//error_log("getCalendarData unr: $unr dtstart: $dtstart");
+			//error_log($begin.'/'.$ende);	
 		}
 		else
 		{
@@ -179,7 +179,7 @@ class MySabre_CalDAV_Backend extends Sabre_CalDAV_Backend_Abstract
 		// Kalender erstellen
 		while($begin<$ende)
 		{
-			error_log("while");
+			//error_log("while");
 			$i++;
 			if(!date("w",$begin))
 				$begin=jump_day($begin,1);
@@ -198,8 +198,8 @@ class MySabre_CalDAV_Backend extends Sabre_CalDAV_Backend_Abstract
 			{
 				foreach($val as $row)
 				{
-					error_log("search dtstart:".$dtstart." unr:".$unr);
-					error_log("row dtstart:".$row['dtstart']." unr:".$row['unr'][0]);
+			//		error_log("search dtstart:".$dtstart." unr:".$unr);
+			//		error_log("row dtstart:".$row['dtstart']." unr:".$row['unr'][0]);
 					if($row['dtstart']==$dtstart && $row['unr'][0]==$unr)
 					{
 						error_log("found!");
@@ -265,7 +265,7 @@ END:VTIMEZONE\n".$event."\nEND:VCALENDAR";
 		$user = $calendarId;
 		$data = $this->getCalendarData($user);
 
-		error_log("Caldav_Backend.php/getCalendarObjects($calendarId) data:".print_r($data,true));
+		//error_log("Caldav_Backend.php/getCalendarObjects($calendarId) data:".print_r($data,true));
 		$return  = array();
 		foreach($data as $row)
 		{
@@ -294,7 +294,7 @@ END:VTIMEZONE\n".$event."\nEND:VCALENDAR";
      */
     public function getCalendarObject($calendarId,$objectUri) 
 	{
-		error_log("Caldav_Backend.php/getCalendarObject($calendarId, $objectUri)");
+		//error_log("Caldav_Backend.php/getCalendarObject($calendarId, $objectUri)");
 		$user = $this->getUser();
 		$data = $this->getCalendarData($user,$objectUri);
 		if(count($data)==0)
diff --git a/webdav/Principal.php b/webdav/Principal.php
index a7181db08..cf6cc3879 100644
--- a/webdav/Principal.php
+++ b/webdav/Principal.php
@@ -70,7 +70,7 @@ class MySabre_DAVACL_PrincipalBackend implements Sabre_DAVACL_IPrincipalBackend
     public function getPrincipalsByPrefix($prefixPath) 
 	{
 		//$prefixPath = principals
-		error_log('Principal.php/getPrincipalsByPrefix('.$prefixPath.')');
+		//error_log('Principal.php/getPrincipalsByPrefix('.$prefixPath.')');
         $principals = array();
 		$user = $this->getUser();
 		if($prefixPath=='principals')
@@ -113,7 +113,7 @@ class MySabre_DAVACL_PrincipalBackend implements Sabre_DAVACL_IPrincipalBackend
     public function getPrincipalByPath($path) 
 	{
 		//$path = principals/oesi
-		error_log('Principal.php/getPrincipalByPath('.$path.')');
+		//error_log('Principal.php/getPrincipalByPath('.$path.')');
 		$user = $this->getUser();
         $result = array(
             'id'  => $user,
diff --git a/webdav/dms.php b/webdav/dms.php
index 8ca2089dd..98c640033 100644
--- a/webdav/dms.php
+++ b/webdav/dms.php
@@ -22,6 +22,7 @@
  */
 require_once('../config/cis.config.inc.php');
 require_once('../include/sabredav/lib/Sabre/autoload.php');
+//require_once('../../../sabredav161/SabreDAV/lib/Sabre/autoload.php');
 require_once('DMSdirectory.class.php');
 require_once('DMSfile.class.php');
 require_once('auth.class.php');