diff --git a/actions/apiexternalusershow.php b/actions/apiexternalusershow.php
index 1f04371..b6cda9b 100644
--- a/actions/apiexternalusershow.php
+++ b/actions/apiexternalusershow.php
@@ -67,14 +67,48 @@ class ApiExternalUserShowAction extends ApiPrivateAuthAction
 		
 		// get local profile
 		$local_profile = Profile::getKV('profileurl',$profileurl);
+
 		if($local_profile) {
 			$this->profile->local = $this->twitterUserArray($local_profile);
+
+			$username = $this->profile->local['screen_name'];	
+			
+			// if profile url is not ending with nickname, this is probably a single user instance
+			if(!substr($profileurl, -strlen($username))===$username) {
+				$instanceurl = $profileurl;
+						error_log('1');					
+				}
+
+			// multi user instance
+			else {
+						error_log('2');					
+				$instanceurl = substr($profileurl, 0, strrpos($profileurl, '/'));				
+				}			
+			
+			}
+		
+		// we don't know this user
+		else {
+			
+			// if profile url ends with '/' this is probably an unknown single user instance
+			if(substr($profileurl, -1)==='/') {
+				$instanceurl = $profileurl;
+				$username = 1;		
+						error_log('3');														
+				}
+
+			// multi user instance
+			else {
+				$username = substr($profileurl, strrpos($profileurl, '/')+1);			
+				$instanceurl = substr($profileurl, 0, strrpos($profileurl, '/'));				
+						error_log('4');									
+				}			
+			
 			}
 		
 		// get profile from external instance
-		$instanceurl = substr($profileurl, 0, strrpos($profileurl, '/'));
-		$username = substr($profileurl, strrpos($profileurl, '/')+1);
-		$apicall = $instanceurl.'/api/users/show.json?id='.$username; 		
+		$apicall = $instanceurl.'/api/users/show.json?id='.$username; 	
+						error_log('apicall:'.$apicall);	
 		stream_context_set_default(array('http' => array('method' => 'GET')));
         $this->profile->external = json_decode(file_get_contents($apicall));        
 
diff --git a/actions/qvitter.php b/actions/qvitter.php
index dac7991..2ccdeb7 100644
--- a/actions/qvitter.php
+++ b/actions/qvitter.php
@@ -715,7 +715,7 @@ class QvitterAction extends ApiAction
 				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/lib/jquery.minicolors.min.js"></script>	    	    
 				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/lib/jquery.jWindowCrop.js"></script>	
 				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/lib/load-image.min.js"></script>	
-				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/dom-functions.js?v=40"></script>		    	
+				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/dom-functions.js?v=41"></script>		    	
 				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/misc-functions.js?v=40"></script>		    		    
 				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/ajax-functions.js?v=40"></script>		    		    	    
 				<script type="text/javascript" src="<?php print $qvitterpath; ?>js/lan.js?v=40"></script>	
diff --git a/js/dom-functions.js b/js/dom-functions.js
index c385406..6bfe45e 100644
--- a/js/dom-functions.js
+++ b/js/dom-functions.js
@@ -1139,6 +1139,10 @@ function popUpAction(popupId, heading, bodyHtml, footerHtml){
   
 function convertNewGNUSocialURItoURL(obj) {
 
+	if(typeof obj.uri == 'undefined') {
+		obj.uri = '';
+		}
+
 	if(obj.uri.substring(0,4) != 'http') {									
 		
 		// guess the url if we only have the non-url uri
@@ -1779,7 +1783,7 @@ function buildQueetHtml(obj, idInStream, extraClassesThisRun, requeeted_by) {
 		
 	// in-groups html
 	var in_groups_html = '';							
-	if(obj.statusnet_in_groups !== false && typeof obj.statusnet_in_groups != 'undefined') {
+	if(typeof obj.statusnet_in_groups != 'undefined' && obj.statusnet_in_groups !== false && typeof obj.statusnet_in_groups === 'object') {
 		$.each(obj.statusnet_in_groups,function(){
 			in_groups_html = '<span class="in-groups"><a class="h-card group" href="' + obj.statusnet_in_groups.url + '">!' + obj.statusnet_in_groups.nickname + '</a></span>';			
 			});
@@ -1805,7 +1809,7 @@ function buildQueetHtml(obj, idInStream, extraClassesThisRun, requeeted_by) {
 		var requeetedByHtml = '<a data-user-id="' + requeeted_by.user.id + '" href="' + requeeted_by.user.statusnet_profile_url + '"> <b>' + requeeted_by.user.name + '</b></a>';
 		requeetHtml = '<div class="context" id="requeet-' + requeeted_by.id + '"><span class="with-icn"><i class="badge-requeeted"></i><span class="requeet-text"> ' + window.sL.requeetedBy.replace('{requeeted-by}',requeetedByHtml) + '</span></span></div>';
 		}
-		
+	
 	obj = convertNewGNUSocialURItoURL(obj);		
 
 	// external