diff --git a/inc/caldav-ACL.php b/inc/caldav-ACL.php
index ace42c30..06cc40e8 100644
--- a/inc/caldav-ACL.php
+++ b/inc/caldav-ACL.php
@@ -104,32 +104,32 @@ $cache_delete_list = array();
 $qry = new AwlQuery('BEGIN');
 $qry->Exec('ACL',__LINE__,__FILE__);
 
-function process_ace( $grantor, $by_principal, $by_collection, XMLElement $ace ) {
+function process_ace( $grantor, $by_principal, $by_collection, $ace ) {
   global $cache_delete_list, $request;
   
   $elements = $ace->GetContent();
   $principal_node = $elements[0];
   $grant = $elements[1];
-  if ( $principal_node->GetTag() != 'DAV::principal' ) $request->MalformedRequest('ACL request must contain a principal, not '.$principal->GetTag());
-  $grant_tag = $grant->GetTag();
+  if ( $principal_node->GetNSTag() != 'DAV::principal' ) $request->MalformedRequest('ACL request must contain a principal, not '.$principal->GetNSTag());
+  $grant_tag = $grant->GetNSTag();
   if ( $grant_tag == 'DAV::deny' )   $request->PreconditionFailed(403,'grant-only');
   if ( $grant_tag == 'DAV::invert' ) $request->PreconditionFailed(403,'no-invert');
-  if ( $grant->GetTag() != 'DAV::grant' ) $request->MalformedRequest('ACL request must contain a principal for each ACE');
+  if ( $grant->GetNSTag() != 'DAV::grant' ) $request->MalformedRequest('ACL request must contain a principal for each ACE');
 
   $privilege_names = array();
   $xml_privs = $grant->GetPath("/DAV::grant/DAV::privilege/*");
   foreach( $xml_privs AS $k => $priv ) {
-    $privilege_names[] = $priv->GetTag();
+    $privilege_names[] = $priv->GetNSTag();
   }
   $privileges = privilege_to_bits($privilege_names);
 
   $principal_content = $principal_node->GetContent();
   if ( count($principal_content) != 1 ) $request->MalformedRequest('ACL request must contain exactly one principal per ACE');
   $principal_content = $principal_content[0];
-  switch( $principal_content->GetTag() ) {
+  switch( $principal_content->GetNSTag() ) {
     case 'DAV::property':
       $principal_property = $principal_content->GetContent();
-      if ( $principal_property[0]->GetTag() != 'DAV::owner' ) $request->PreconditionFailed(403, 'recognized-principal' );
+      if ( $principal_property[0]->GetNSTag() != 'DAV::owner' ) $request->PreconditionFailed(403, 'recognized-principal' );
       if ( privilege_to_bits('all') != $privileges ) {
         $request->PreconditionFailed(403, 'no-protected-ace-conflict', 'Owner must always have all permissions' );
       }
diff --git a/inc/caldav-MKCOL.php b/inc/caldav-MKCOL.php
index 805ed660..ea82aef1 100644
--- a/inc/caldav-MKCOL.php
+++ b/inc/caldav-MKCOL.php
@@ -54,17 +54,17 @@ if ( isset($request->xml_tags) ) {
   */
   $position = 0;
   $xmltree = BuildXMLTree( $request->xml_tags, $position);
-  if ( $xmltree->GetTag() == 'DAV::mkcol' ) $request_type = 'extended-mkcol';
+  if ( $xmltree->GetNSTag() == 'DAV::mkcol' ) $request_type = 'extended-mkcol';
 
-  if ( $xmltree->GetTag() != 'urn:ietf:params:xml:ns:caldav:mkcalendar' && $request_type != 'extended-mkcol' ) {
-    $request->DoResponse( 406, sprintf('The XML is not a "DAV::mkcol" or "urn:ietf:params:xml:ns:caldav:mkcalendar" document (%s)', $xmltree->GetTag()) );
+  if ( $xmltree->GetNSTag() != 'urn:ietf:params:xml:ns:caldav:mkcalendar' && $request_type != 'extended-mkcol' ) {
+    $request->DoResponse( 406, sprintf('The XML is not a "DAV::mkcol" or "urn:ietf:params:xml:ns:caldav:mkcalendar" document (%s)', $xmltree->GetNSTag()) );
   }
   $setprops = $xmltree->GetContent();   // <set>
   $setprops = $setprops[0]->GetContent();  // <prop>
   $setprops = $setprops[0]->GetContent();  // the array of properties.
 
   foreach( $setprops AS $k => $setting ) {
-    $tag = $setting->GetTag();
+    $tag = $setting->GetNSTag();
     $content = $setting->RenderContent();
 
     dbg_error_log( 'MKCOL', 'Processing tag "%s"', $tag);
@@ -85,7 +85,11 @@ if ( isset($request->xml_tags) ) {
         }
         else {
           $resourcetypes = $setting->GetPath('DAV::resourcetype/*');
-          $resourcetypes = str_replace( "\n", "", implode('',$resourcetypes));
+          $types = '';
+          foreach( $resourcetypes AS $k => $v ) {
+            $types .= '<'.$v->GetNSTag().'/>';
+          }
+          $resourcetypes = $types;
           $success[$tag] = 1;
         }
         break;
diff --git a/inc/caldav-MKTICKET.php b/inc/caldav-MKTICKET.php
index ad57c602..2f5717b0 100644
--- a/inc/caldav-MKTICKET.php
+++ b/inc/caldav-MKTICKET.php
@@ -35,8 +35,8 @@ if ( ! isset($request->xml_tags) ) {
 }
 
 $xmltree = BuildXMLTree( $request->xml_tags, $position);
-if ( $xmltree->GetTag() != 'http://www.xythos.com/namespaces/StorageServer:ticketinfo' &&
-     $xmltree->GetTag() != 'DAV::ticketinfo' ) {
+if ( $xmltree->GetNSTag() != 'http://www.xythos.com/namespaces/StorageServer:ticketinfo' &&
+     $xmltree->GetNSTag() != 'DAV::ticketinfo' ) {
   $request->XMLResponse( 400, new XMLElement( 'error', new XMLElement('invalid-xml-for-request'), $reply->GetXmlNsArray() ) );
 }
 
@@ -44,7 +44,7 @@ $ticket_timeout = 'Seconds-3600';
 $ticket_privs_array = array('read-free-busy');
 foreach( $xmltree->GetContent() AS $k => $v ) {
   // <!ELEMENT ticketinfo (id?, owner?, timeout, visits, privilege)>
-  switch( $v->GetTag() ) {
+  switch( $v->GetNSTag() ) {
     case 'DAV::timeout':
     case 'http://www.xythos.com/namespaces/StorageServer:timeout':
       $ticket_timeout = $v->GetContent();
@@ -55,7 +55,7 @@ foreach( $xmltree->GetContent() AS $k => $v ) {
       $ticket_privs_array = $v->GetElements(); // Ensure we always get an array back
       $ticket_privileges = 0;
       foreach( $ticket_privs_array AS $k1 => $v1 ) {
-        $ticket_privileges |= privilege_to_bits( $v1->GetTag() );
+        $ticket_privileges |= privilege_to_bits( $v1->GetNSTag() );
       }
       if ( $ticket_privileges & privilege_to_bits('write') )          $ticket_privileges |= privilege_to_bits( 'read' );
       if ( $ticket_privileges & privilege_to_bits('read') )           $ticket_privileges |= privilege_to_bits( array('read-free-busy', 'read-current-user-privilege-set') );
diff --git a/inc/caldav-PROPFIND.php b/inc/caldav-PROPFIND.php
index d5e053ce..2a040cf7 100644
--- a/inc/caldav-PROPFIND.php
+++ b/inc/caldav-PROPFIND.php
@@ -31,7 +31,7 @@ else {
   $allprop    = $xmltree->GetPath('/DAV::propfind/*');
   $property_list = array();
   foreach( $allprop AS $k1 => $propwrap ) {
-    switch ( $propwrap->GetTag() ) {
+    switch ( $propwrap->GetNSTag() ) {
       case 'DAV::allprop':
         $property_list[] = 'DAV::allprop';
         break;
@@ -41,7 +41,7 @@ else {
       default:  // prop, include
         $subprop = $propwrap->GetElements();
         foreach( $subprop AS $k => $v ) {
-          if ( is_object($v) && method_exists($v,'GetTag') ) $property_list[] = $v->GetTag();
+          if ( is_object($v) && method_exists($v,'GetTag') ) $property_list[] = $v->GetNSTag();
         }
     }
   }
diff --git a/inc/caldav-REPORT-calquery.php b/inc/caldav-REPORT-calquery.php
index 5c01caea..0c7bc2c8 100644
--- a/inc/caldav-REPORT-calquery.php
+++ b/inc/caldav-REPORT-calquery.php
@@ -31,23 +31,23 @@ $qry_content = $xmltree->GetContent('urn:ietf:params:xml:ns:caldav:calendar-quer
 $properties = array();
 while (list($idx, $qqq) = each($qry_content))
 {
-  $proptype = $qry_content[$idx]->GetTag();
+  $proptype = $qry_content[$idx]->GetNSTag();
   switch( $proptype ) {
     case 'DAV::prop':
       $qry_props = $xmltree->GetPath('/urn:ietf:params:xml:ns:caldav:calendar-query/'.$proptype.'/*');
       foreach( $qry_content[$idx]->GetElements() AS $k => $v ) {
-        $propertyname = preg_replace( '/^.*:/', '', $v->GetTag() );
+        $propertyname = $v->GetTag();
         $properties[$propertyname] = 1;
-        if ( $v->GetTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
+        if ( $v->GetNSTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
       }
       break;
   
     case 'DAV::allprop':
       $properties['allprop'] = 1;
-        if ( $qry_content[$idx]->GetTag() == 'DAV::include' ) {
+        if ( $qry_content[$idx]->GetNSTag() == 'DAV::include' ) {
         foreach( $qry_content[$idx]->GetElements() AS $k => $v ) {
-          $include_properties[] = $v->GetTag(); /** $include_properties is referenced in DAVResource where allprop is expanded */
-          if ( $v->GetTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
+          $include_properties[] = $v->GetNSTag(); /** $include_properties is referenced in DAVResource where allprop is expanded */
+          if ( $v->GetNSTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
         }
       }
       break;
@@ -97,7 +97,7 @@ function SqlFilterFragment( $filter, $components, $property = null, $parameter =
   }
 
   foreach( $filter AS $k => $v ) {
-    $tag = $v->GetTag();
+    $tag = $v->GetNSTag();
     dbg_error_log("calquery", "Processing $tag into SQL - %d, '%s', %d\n", count($components), $property, isset($parameter) );
 
     $not_defined = "";
@@ -274,10 +274,10 @@ function SqlFilterFragment( $filter, $components, $property = null, $parameter =
  */
 function BuildSqlFilter( $filter ) {
   $components = array();
-  if ( $filter->GetTag() == "urn:ietf:params:xml:ns:caldav:comp-filter" && $filter->GetAttribute("name") == "VCALENDAR" )
+  if ( $filter->GetNSTag() == "urn:ietf:params:xml:ns:caldav:comp-filter" && $filter->GetAttribute("name") == "VCALENDAR" )
     $filter = $filter->GetContent();  // Everything is inside a VCALENDAR AFAICS
   else {
-    dbg_error_log("calquery", "Got bizarre CALDAV:FILTER[%s=%s]] which does not contain comp-filter = VCALENDAR!!", $filter->GetTag(), $filter->GetAttribute("name") );
+    dbg_error_log("calquery", "Got bizarre CALDAV:FILTER[%s=%s]] which does not contain comp-filter = VCALENDAR!!", $filter->GetNSTag(), $filter->GetAttribute("name") );
   }
   return SqlFilterFragment( $filter, $components );
 }
diff --git a/inc/caldav-REPORT-cardquery.php b/inc/caldav-REPORT-cardquery.php
index 4115ecd4..319e6f7c 100644
--- a/inc/caldav-REPORT-cardquery.php
+++ b/inc/caldav-REPORT-cardquery.php
@@ -17,24 +17,24 @@ function get_address_properties( $address_data_xml ) {
  * Build the array of properties to include in the report output
  */
 $qry_content = $xmltree->GetContent('urn:ietf:params:xml:ns:carddav:addressbook-query');
-$proptype = $qry_content[0]->GetTag();
+$proptype = $qry_content[0]->GetNSTag();
 $properties = array();
 switch( $proptype ) {
   case 'DAV::prop':
     $qry_props = $xmltree->GetPath('/urn:ietf:params:xml:ns:carddav:addressbook-query/'.$proptype.'/*');
     foreach( $qry_content[0]->GetElements() AS $k => $v ) {
-      $propertyname = preg_replace( '/^.*:/', '', $v->GetTag() );
+      $propertyname = preg_replace( '/^.*:/', '', $v->GetNSTag() );
       $properties[$propertyname] = 1;
-      if ( $v->GetTag() == 'urn:ietf:params:xml:ns:carddav:address-data' ) get_address_properties($v);
+      if ( $v->GetNSTag() == 'urn:ietf:params:xml:ns:carddav:address-data' ) get_address_properties($v);
     }
     break;
 
   case 'DAV::allprop':
     $properties['allprop'] = 1;
-    if ( $qry_content[1]->GetTag() == 'DAV::include' ) {
+    if ( $qry_content[1]->GetNSTag() == 'DAV::include' ) {
       foreach( $qry_content[1]->GetElements() AS $k => $v ) {
-        $include_properties[] = $v->GetTag(); /** $include_properties is referenced in DAVResource where allprop is expanded */
-        if ( $v->GetTag() == 'urn:ietf:params:xml:ns:carddav:address-data' ) get_address_properties($v);
+        $include_properties[] = $v->GetNSTag(); /** $include_properties is referenced in DAVResource where allprop is expanded */
+        if ( $v->GetNSTag() == 'urn:ietf:params:xml:ns:carddav:address-data' ) get_address_properties($v);
       }
     }
     break;
@@ -90,7 +90,7 @@ function SqlFilterCardDAV( $filter, $components, $property = null, $parameter =
   }
 
   foreach( $filter AS $k => $v ) {
-    $tag = $v->GetTag();
+    $tag = $v->GetNSTag();
     dbg_error_log("cardquery", "Processing $tag into SQL - %d, '%s', %d\n", count($components), $property, isset($parameter) );
 
     $not_defined = "";
diff --git a/inc/caldav-REPORT-expand-property.php b/inc/caldav-REPORT-expand-property.php
index b72f23b5..53d50e46 100644
--- a/inc/caldav-REPORT-expand-property.php
+++ b/inc/caldav-REPORT-expand-property.php
@@ -53,8 +53,8 @@ function expand_properties( $urls, $ptree, &$reply, $recurse_again = true ) {
     foreach( $ptree AS $n => $property ) {
       if ( ! is_object($property) ) continue;
       $pname = $property->GetAttribute('name');
-      $pns = $property->GetAttribute('namespace');
-      if ( !isset($pns) || $pns == '' ) $pns = 'DAV:';  // Not sure if this is the correct way to default this.
+      $pns = $property->GetNamespace('namespace');
+      if ( !isset($pns) || $pns == '' ) $pns = $property->GetNameSpace();
       $pname = $pns .':'. $pname;
       $props[] = $pname;
       $subtrees[$pname] = $property->GetElements();
@@ -66,10 +66,7 @@ function expand_properties( $urls, $ptree, &$reply, $recurse_again = true ) {
         if ( isset($href_containers) ) {
           foreach( $href_containers AS $h => $property ) {
             $hrefs = $property->GetElements();
-            $pname = $property->GetTag();
-            $pns = $property->GetAttribute('xmlns');
-            if ( !isset($pns) || $pns == '' ) $pns = 'DAV:';  // Not sure if this is the correct way to default this.
-            $pname = $pns .':'. $pname;
+            $pname = $property->GetNSTag();
             $paths = array();
             foreach( $hrefs AS $k => $v ) {
               $content = $v->GetContent();
diff --git a/inc/caldav-REPORT-multiget.php b/inc/caldav-REPORT-multiget.php
index 639ac716..f93d51a0 100644
--- a/inc/caldav-REPORT-multiget.php
+++ b/inc/caldav-REPORT-multiget.php
@@ -26,24 +26,24 @@ function check_for_expansion( $calendar_data_node ) {
  * Build the array of properties to include in the report output
  */
 
-$proptype = $qry_content[0]->GetTag();
+$proptype = $qry_content[0]->GetNSTag();
 $properties = array();
 switch( $proptype ) {
   case 'DAV::prop':
     $qry_props = $xmltree->GetPath('/*/'.$proptype.'/*');
     foreach( $qry_content[0]->GetElements() AS $k => $v ) {
-      $propertyname = preg_replace( '/^.*:/', '', $v->GetTag() );
+      $propertyname = preg_replace( '/^.*:/', '', $v->GetNSTag() );
       $properties[$propertyname] = 1;
-      if ( $v->GetTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
+      if ( $v->GetNSTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
     }
     break;
 
   case 'DAV::allprop':
     $properties['allprop'] = 1;
-    if ( $qry_content[1]->GetTag() == 'DAV::include' ) {
+    if ( $qry_content[1]->GetNSTag() == 'DAV::include' ) {
       foreach( $qry_content[1]->GetElements() AS $k => $v ) {
-        $include_properties[] = $v->GetTag(); /** $include_properties is referenced in DAVResource where allprop is expanded */
-        if ( $v->GetTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
+        $include_properties[] = $v->GetNSTag(); /** $include_properties is referenced in DAVResource where allprop is expanded */
+        if ( $v->GetNSTag() == 'urn:ietf:params:xml:ns:caldav:calendar-data' ) check_for_expansion($v);
       }
     }
     break;
diff --git a/inc/caldav-REPORT-principal-match.php b/inc/caldav-REPORT-principal-match.php
index e86d4918..40310899 100644
--- a/inc/caldav-REPORT-principal-match.php
+++ b/inc/caldav-REPORT-principal-match.php
@@ -42,7 +42,7 @@ $qry = new AwlQuery($sql, $params);
 $get_props = $xmltree->GetPath('/DAV::principal-match/DAV::prop/*');
 $properties = array();
 foreach( $get_props AS $k1 => $v1 ) {
-  $properties[] = $v1->GetTag();
+  $properties[] = $v1->GetNSTag();
 }
 
 if ( $qry->Exec("REPORT",__LINE__,__FILE__) && $qry->rows() > 0 ) {
diff --git a/inc/caldav-REPORT-principal.php b/inc/caldav-REPORT-principal.php
index 3f6a4164..7cee9ccf 100644
--- a/inc/caldav-REPORT-principal.php
+++ b/inc/caldav-REPORT-principal.php
@@ -25,7 +25,7 @@ foreach( $searches AS $k => $search ) {
   $subwhere = "";
   foreach( $qry_props AS $k1 => $v1 ) {
     if ( $subwhere != "" ) $subwhere .= " OR ";
-    switch( $v1->GetTag() ) {
+    switch( $v1->GetNSTag() ) {
       case 'DAV::displayname':
         $subwhere .= ' displayname ILIKE :displayname_match ';
         $params[':displayname_match'] = '%'.$match.'%';
@@ -49,7 +49,7 @@ foreach( $searches AS $k => $search ) {
         * @todo We should handle a lot more properties here.  principal-URL seems a likely one to be used.
         * @todo We should catch the unsupported properties in the query and fire back an error indicating so.
         */
-        dbg_error_log("principal", "Unhandled tag '%s' to match '%s'\n", $v1->GetTag(), $match );
+        dbg_error_log("principal", "Unhandled tag '%s' to match '%s'\n", $v1->GetNSTag(), $match );
     }
   }
   if ( $subwhere != "" ) {
@@ -64,7 +64,7 @@ $qry = new AwlQuery($sql, $params);
 $get_props = $xmltree->GetPath('/DAV::principal-property-search/DAV::prop/*');
 $properties = array();
 foreach( $get_props AS $k1 => $v1 ) {
-  $properties[] = $v1->GetTag();
+  $properties[] = $v1->GetNSTag();
 }
 
 if ( $qry->Exec("REPORT",__LINE__,__FILE__) && $qry->rows() > 0 ) {
diff --git a/inc/caldav-REPORT-sync-collection.php b/inc/caldav-REPORT-sync-collection.php
index d1201721..f5ddced9 100644
--- a/inc/caldav-REPORT-sync-collection.php
+++ b/inc/caldav-REPORT-sync-collection.php
@@ -42,7 +42,7 @@ $v = $props[0];
 $props = $v->GetContent();
 $proplist = array();
 foreach( $props AS $k => $v ) {
-  $proplist[] = $v->GetTag();
+  $proplist[] = $v->GetNSTag();
 }
 
 function display_status( $status_code ) {
diff --git a/inc/caldav-REPORT.php b/inc/caldav-REPORT.php
index 1da78f1f..f7dd4891 100644
--- a/inc/caldav-REPORT.php
+++ b/inc/caldav-REPORT.php
@@ -34,8 +34,8 @@ if ( !is_object($xmltree) ) {
 
 $target = new DAVResource($request->path);
 
-if ( $xmltree->GetTag() != 'DAV::principal-property-search'
-                && $xmltree->GetTag() != 'DAV::principal-property-search-set' ) {
+if ( $xmltree->GetNSTag() != 'DAV::principal-property-search'
+                && $xmltree->GetNSTag() != 'DAV::principal-property-search-set' ) {
   $target->NeedPrivilege( array('DAV::read', 'urn:ietf:params:xml:ns:caldav:read-free-busy'), true ); // They may have either
 }
 
@@ -47,13 +47,13 @@ $denied = array();
 $unsupported = array();
 if ( isset($prop_filter) ) unset($prop_filter);
 
-if ( $xmltree->GetTag() == 'urn:ietf:params:xml:ns:caldav:free-busy-query' ) {
+if ( $xmltree->GetNSTag() == 'urn:ietf:params:xml:ns:caldav:free-busy-query' ) {
   include("caldav-REPORT-freebusy.php");
   exit; // Not that the above include should return anyway
 }
 
 $reply = new XMLDocument( array( "DAV:" => "" ) );
-switch( $xmltree->GetTag() ) {
+switch( $xmltree->GetNSTag() ) {
   case 'DAV::principal-property-search':
     include("caldav-REPORT-principal.php");
     exit; // Not that it should return anyway.
@@ -219,26 +219,26 @@ if ( $target->IsExternal() ) {
 	update_external ( $target );
 }
 
-if ( $xmltree->GetTag() == "urn:ietf:params:xml:ns:caldav:calendar-query" ) {
+if ( $xmltree->GetNSTag() == "urn:ietf:params:xml:ns:caldav:calendar-query" ) {
   $calquery = $xmltree->GetPath("/urn:ietf:params:xml:ns:caldav:calendar-query/*");
   include("caldav-REPORT-calquery.php");
 }
-elseif ( $xmltree->GetTag() == "urn:ietf:params:xml:ns:caldav:calendar-multiget" ) {
+elseif ( $xmltree->GetNSTag() == "urn:ietf:params:xml:ns:caldav:calendar-multiget" ) {
   $mode = 'caldav';
   $qry_content = $xmltree->GetContent('urn:ietf:params:xml:ns:caldav:calendar-multiget');
   include("caldav-REPORT-multiget.php");
 }
-elseif ( $xmltree->GetTag() == "urn:ietf:params:xml:ns:carddav:addressbook-multiget" ) {
+elseif ( $xmltree->GetNSTag() == "urn:ietf:params:xml:ns:carddav:addressbook-multiget" ) {
   $mode = 'carddav';
   $qry_content = $xmltree->GetContent('urn:ietf:params:xml:ns:carddav:addressbook-multiget');
   include("caldav-REPORT-multiget.php");
 }
-elseif ( $xmltree->GetTag() == "urn:ietf:params:xml:ns:carddav:addressbook-query" ) {
+elseif ( $xmltree->GetNSTag() == "urn:ietf:params:xml:ns:carddav:addressbook-query" ) {
   $cardquery = $xmltree->GetPath("/urn:ietf:params:xml:ns:carddav:addressbook-query/*");
   include("caldav-REPORT-cardquery.php");
 }
 else {
-  dbg_error_log( 'ERROR', "Request for unsupported report type '%s'.", $xmltree->GetTag() );
-  $request->PreconditionFailed( 403, 'DAV::supported-report', sprintf( '"%s" is not a supported report type', $xmltree->GetTag()) );
+  dbg_error_log( 'ERROR', "Request for unsupported report type '%s'.", $xmltree->GetNSTag() );
+  $request->PreconditionFailed( 403, 'DAV::supported-report', sprintf( '"%s" is not a supported report type', $xmltree->GetNSTag()) );
 }