diff --git a/bl-kernel/boot/init.php b/bl-kernel/boot/init.php
index 7ffc01ec..c1a9864e 100644
--- a/bl-kernel/boot/init.php
+++ b/bl-kernel/boot/init.php
@@ -91,7 +91,7 @@ define('NO_PARENT_CHAR', '3849abb4cb7abd24c2d8dac17b216f17');
 define('POSTS_PER_PAGE_ADMIN', 10);
 
 // Cli mode status for new posts/pages
-define('CLI_MODE', TRUE);
+define('CLI_MODE', FALSE);
 
 // Cli mode status for new posts/pages
 define('CLI_STATUS', 'published');
@@ -100,7 +100,7 @@ define('CLI_STATUS', 'published');
 define('CLI_USERNAME', 'admin');
 
 // Filename for posts and pages
-define('FILENAME', 'index.txt');
+define('FILENAME', 'index.md');
 
 // Database date format
 define('DB_DATE_FORMAT', 'Y-m-d H:i:s');
@@ -123,17 +123,11 @@ define('EXTREME_FRIENDLY_URL', false);
 // Directory permissions
 define('DIR_PERMISSIONS', 0755);
 
-// Multibyte string extension loaded.
-define('MB_STRING', extension_loaded('mbstring'));
+// Set internal character encoding.
+mb_internal_encoding(CHARSET);
 
-if(MB_STRING)
-{
-	// Set internal character encoding.
-	mb_internal_encoding(CHARSET);
-
-	// Set HTTP output character encoding.
-	mb_http_output(CHARSET);
-}
+// Set HTTP output character encoding.
+mb_http_output(CHARSET);
 
 // Inclde Abstract Classes
 include(PATH_ABSTRACT.'dbjson.class.php');
diff --git a/bl-kernel/dbpages.class.php b/bl-kernel/dbpages.class.php
index cb6ca23e..76afc3b4 100644
--- a/bl-kernel/dbpages.class.php
+++ b/bl-kernel/dbpages.class.php
@@ -84,7 +84,7 @@ class dbPages extends dbJSON
 
 		// Make the index.txt and save the file.
 		$data = implode("\n", $dataForFile);
-		if( file_put_contents(PATH_PAGES.$key.FILENAME, $data) === false ) {
+		if( file_put_contents(PATH_PAGES.$key.DS.FILENAME, $data) === false ) {
 			Log::set(__METHOD__.LOG_SEP.'Error occurred when trying to put the content in the file index.txt');
 			return false;
 		}
diff --git a/bl-plugins/pages/plugin.php b/bl-plugins/pages/plugin.php
index 50f84e7f..886b6905 100644
--- a/bl-plugins/pages/plugin.php
+++ b/bl-plugins/pages/plugin.php
@@ -43,7 +43,7 @@ class pluginPages extends Plugin {
 		}
 
 		$html .= '<div class="plugin-content">';
-		$html .= '<ul>';
+		$html .= '<ul class="parents">';
 
 		// Show home link ?
 		if($this->getDbField('homeLink')) {
@@ -59,8 +59,8 @@ class pluginPages extends Plugin {
 			if( $parent->published() )
 			{
 				// Print the parent
-				$html .= '<li>';
-				$html .= '<a class="parent '.( ($parent->key()==$Url->slug())?' active':'').'" href="'.$parent->permalink().'">'.$parent->title().'</a>';
+				$html .= '<li class="parent">';
+				$html .= '<a class="parent'.( ($parent->key()==$Url->slug())?' active':'').'" href="'.$parent->permalink().'">'.$parent->title().'</a>';
 
 				// Check if the parent has children
 				if(isset($pagesParents[$parent->key()]))
diff --git a/install.php b/install.php
index a8dcab6d..8e2bbc81 100644
--- a/install.php
+++ b/install.php
@@ -41,7 +41,7 @@ define('PATH_ABSTRACT',		PATH_KERNEL.'abstract'.DS);
 define('CHECK_SYMBOLIC_LINKS', TRUE);
 
 // Filename for posts and pages
-define('FILENAME', 'index.txt');
+define('FILENAME', 'index.md');
 
 // Domain and protocol
 define('DOMAIN', $_SERVER['HTTP_HOST']);
@@ -92,17 +92,11 @@ define('DB_DATE_FORMAT', 'Y-m-d H:i:s');
 // Charset, default UTF-8.
 define('CHARSET', 'UTF-8');
 
-// Multibyte string extension loaded.
-define('MB_STRING', extension_loaded('mbstring'));
+// Set internal character encoding.
+mb_internal_encoding(CHARSET);
 
-if(MB_STRING)
-{
-	// Set internal character encoding.
-	mb_internal_encoding(CHARSET);
-
-	// Set HTTP output character encoding.
-	mb_http_output(CHARSET);
-}
+// Set HTTP output character encoding.
+mb_http_output(CHARSET);
 
 // --- PHP Classes ---
 
@@ -226,6 +220,16 @@ function checkSystem()
 		array_push($stdOut, $tmp);
 	}
 
+	if(!in_array('mbstring', $phpModules))
+	{
+		$errorText = 'PHP module Multibyte String (mbstring) is not installed. (ERR_206)';
+		error_log($errorText, 0);
+
+		$tmp['title'] = 'PHP module';
+		$tmp['errorText'] = $errorText;
+		array_push($stdOut, $tmp);
+	}
+
 	// Try to create the directory content
 	@mkdir(PATH_CONTENT, $dirpermissions, true);