diff --git a/main/inc/lib/message.lib.php b/main/inc/lib/message.lib.php
index 28f4e73a5e..99981ae1bd 100755
--- a/main/inc/lib/message.lib.php
+++ b/main/inc/lib/message.lib.php
@@ -37,6 +37,7 @@ class MessageManager
 		$min=30;
 		global $_configuration;
 		$userlist = who_is_online($min, true);
+		$online_user_list = array();
 		foreach($userlist as $row) {
 			$receiver_id = $row[0];
 			$online_user_list[$receiver_id] = GetFullUserName($receiver_id).($current_user_id==$receiver_id?(" (".get_lang('Myself').")"):(""));
diff --git a/main/messages/new_message.php b/main/messages/new_message.php
index 23762ff84d..f7a8b8a2ab 100755
--- a/main/messages/new_message.php
+++ b/main/messages/new_message.php
@@ -182,9 +182,9 @@ function manage_form ($default, $select_from_user_list = null) {
 	global $charset;
 	$table_message = Database::get_main_table(TABLE_MESSAGE);
 
-	$group_id 	= intval($_REQUEST['group_id']);
-	$message_id = intval($_GET['message_id']);
-	$param_f = isset($_GET['f'])?Security::remove_XSS($_GET['f']):'';
+	$group_id 		= isset($_REQUEST['group_id']) ? intval($_REQUEST['group_id']) : null;
+	$message_id 	= isset($_GET['message_id'])  ?  intval($_GET['message_id']) : null;	
+	$param_f 		= isset($_GET['f']) ? Security::remove_XSS($_GET['f']):'';
 
 	$form = new FormValidator('compose_message',null,api_get_self().'?f='.$param_f,null,array('enctype'=>'multipart/form-data'));
 	if (empty($group_id)) {
@@ -256,7 +256,6 @@ function manage_form ($default, $select_from_user_list = null) {
 			$file_comments	= $_POST['legend'];
 			$title 			= $values['title'];
 			$content 		= $values['content'];
-
 			$group_id		= $values['group_id'];
 			$parent_id 		= $values['parent_id'];
 	
@@ -297,7 +296,7 @@ if ($_GET['f']=='social') {
 
 Display::display_header(get_lang('ComposeMessage'));
 
-$group_id = intval($_REQUEST['group_id']);
+$group_id = isset($_REQUEST['group_id']) ? intval($_REQUEST['group_id']) : null;
 
 if ($group_id != 0) {
 	echo '<div class=actions>';
diff --git a/main/social/search.php b/main/social/search.php
index bb287b79cb..2727662dba 100755
--- a/main/social/search.php
+++ b/main/social/search.php
@@ -81,17 +81,17 @@ echo '<div id="social-content">';
 				echo '</div>';											
 			}
 								
-			//get users from tags
-			if (is_array($results) && count($results) > 0) {
-				foreach ($results as $result) {
+			//Get users from tags
+			if (is_array($results) && count($results) > 0) {				
+				foreach ($results as $result) {					
 					$id = $result['id'];
 					$url_open  = '<a href="groups.php?id='.$id.'">';
 					$url_close = '</a>';
 						
 					$name = api_strtoupper(cut($result['name'],25,true));				
-					if ($result['relation_type'] == GROUP_USER_PERMISSION_ADMIN) {		 	
+					if (isset($result['relation_type']) && $result['relation_type'] == GROUP_USER_PERMISSION_ADMIN) {		 	
 						$name .= Display::return_icon('social_group_admin.png', get_lang('Admin'), array('style'=>'vertical-align:middle'));
-					} elseif ($result['relation_type'] == GROUP_USER_PERMISSION_MODERATOR) {			
+					} elseif (isset($result['relation_type'])  && $result['relation_type'] == GROUP_USER_PERMISSION_MODERATOR) {			
 						$name .= Display::return_icon('social_group_moderator.png', get_lang('Moderator'), array('style'=>'vertical-align:middle'));
 					}
 					$count_users_group = count(GroupPortalManager::get_all_users_by_group($id));
@@ -101,7 +101,7 @@ echo '<div id="social-content">';
 						$count_users_group = $count_users_group.' '.get_lang('Members');
 					}					
 					
-					$picture = GroupPortalManager::get_picture_group($result['id'], $result['picture_uri'],80);	
+					$picture = GroupPortalManager::get_picture_group($id, $result['picture_uri'],80);	
 											
 					$result['picture_uri'] = '<img class="social-groups-image" src="'.$picture['file'].'" hspace="4" height="50" border="2" align="left" width="50" />';			
 					$grid_item_1 = Display::return_icon('boxmygroups.jpg');