diff --git a/main/course_home/activity.php b/main/course_home/activity.php
index 059a992fb4..07a1f59ed3 100644
--- a/main/course_home/activity.php
+++ b/main/course_home/activity.php
@@ -61,8 +61,7 @@ if (api_is_allowed_to_edit(null, true) && !api_is_coach()) {
 		<div class="normal-message" id="id_normal_message" style="display:none">';
 			$content .=  '<img src="'.api_get_path(WEB_PATH).'main/inc/lib/javascript/indicator.gif"/>&nbsp;&nbsp;';
 			$content .=  get_lang('PleaseStandBy');
-
-		$content .=  '</div>
+            $content .=  '</div>
 		<div class="confirmation-message" id="id_confirmation_message" style="display:none"></div>
 	</div>';
 
diff --git a/main/css/responsive.css b/main/css/responsive.css
index 3517f0fe59..001cc3d617 100644
--- a/main/css/responsive.css
+++ b/main/css/responsive.css
@@ -44,7 +44,7 @@
     
     #course_tools .row .span4 {
         float: left;        
-        width: 200px;
+        width: 212px;
     }
 }
 
diff --git a/main/inc/introductionSection.inc.php b/main/inc/introductionSection.inc.php
index e613336545..65b3ed60f6 100644
--- a/main/inc/introductionSection.inc.php
+++ b/main/inc/introductionSection.inc.php
@@ -22,7 +22,6 @@
  *	@package chamilo.include
  */
 
-require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
 require_once api_get_path(LIBRARY_PATH).'thematic.lib.php';
 
 /*	Constants and variables */
@@ -121,7 +120,7 @@ $sql = "SELECT intro_text FROM $TBL_INTRODUCTION
         WHERE c_id = $course_id AND id='".Database::escape_string($moduleId)."' AND session_id = '".intval($session_id)."'";
 $intro_dbQuery = Database::query($sql);
 if (Database::num_rows($intro_dbQuery) > 0) {
-	$intro_dbResult = Database::fetch_array($intro_dbQuery);
+	$intro_dbResult = Database::fetch_array($intro_dbQuery);    
 	$intro_content = $intro_dbResult['intro_text'];	
 } else {
 	$intro_content = '';
@@ -187,8 +186,7 @@ if ($tool == TOOL_COURSE_HOMEPAGE && !isset($_GET['intro_cmdEdit'])) {
 		$thematic_advance_info['start_date'] = api_get_local_time($thematic_advance_info['start_date']);
 		$thematic_advance_info['start_date'] = api_format_date($thematic_advance_info['start_date'], DATE_TIME_FORMAT_LONG);
 		
-		$thematic_description_html = '
-									  <div class="thematic-postit">
+		$thematic_description_html = '<div class="thematic-postit">
 								  	  <div class="thematic-postit-top"><h3><a class="thematic-postit-head" style="" href="#"> '.$thematic_advance.'</h3></a></div>						 
 								  	  <div class="thematic-postit-center" style="display:none">';
 		$thematic_description_html .= '<div><strong>'.$thematic_info['title'].'</strong></div>';			
@@ -221,7 +219,7 @@ $introduction_section .=  '</div>';
 
 $introduction_section .=  '<div class="span12">';
 if ($intro_dispDefault) {	
-	$intro_content = text_filter($intro_content); // parse [tex] codes
+	$intro_content = $intro_content;
 	if (!empty($intro_content))	{
 		$introduction_section .=  $intro_content;
 	}
diff --git a/main/inc/lib/add_course.lib.inc.php b/main/inc/lib/add_course.lib.inc.php
index db8b37cccf..dfd8be4ea1 100644
--- a/main/inc/lib/add_course.lib.inc.php
+++ b/main/inc/lib/add_course.lib.inc.php
@@ -2458,10 +2458,10 @@ function fill_db_course($course_id, $course_repository, $language, $default_docu
         /* Introduction text */
 
         $intro_text='<p style="text-align: center;">
-                        <img src="'.api_get_path(REL_CODE_PATH).'img/mascot.png" alt="Mr. Chamilo" title="Mr. Chamilo" /></td>
+                        <img src="'.api_get_path(REL_CODE_PATH).'img/mascot.png" alt="Mr. Chamilo" title="Mr. Chamilo" />
                         <h2>'.lang2db(get_lang('IntroductionText')).'</h2>
                      </p>';
-        Database::query("INSERT INTO $TABLEINTROS  VALUES ($course_id, '" . TOOL_COURSE_HOMEPAGE . "','".$intro_text. "', 0)");
+        Database::query("INSERT INTO $TABLEINTROS  VALUES ($course_id, '" . TOOL_COURSE_HOMEPAGE . "','".$intro_text."', 0)");
         Database::query("INSERT INTO $TABLEINTROS  VALUES ($course_id, '" . TOOL_STUDENTPUBLICATION . "','".lang2db(get_lang('IntroductionTwo')) . "', 0)");
 
         // Wiki intro