Index: misc.php
===================================================================
--- misc.php	(revision 14165)
+++ misc.php	(working copy)
@@ -488,7 +488,7 @@
 	if ( $doc->load($filename) === false )
 		return false;
 	$xpath = new DOMXPath($doc);
-	$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']');
+	$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\'wordpress\')]');
 	if ( $rules->length == 0 )
 		return false;
 	else
@@ -517,7 +517,7 @@
 	if ( $doc -> load($filename) === false )
 		return false;
 	$xpath = new DOMXPath($doc);
-	$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']');
+	$rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\'wordpress\')]');
 	if ( $rules->length > 0 ) {
 		$child = $rules->item(0);
 		$parent = $child->parentNode;
@@ -557,7 +557,7 @@
 	$xpath = new DOMXPath($doc);
 
 	// First check if the rule already exists as in that case there is no need to re-add it
-	$wordpress_rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[@name=\'wordpress\']');
+	$wordpress_rules = $xpath->query('/configuration/system.webServer/rewrite/rules/rule[starts-with(@name,\'wordpress\')]');
 	if ( $wordpress_rules->length > 0 )
 		return true;