diff --git a/config/dmsDefaults.php b/config/dmsDefaults.php
index 68abe28..015e810 100644
--- a/config/dmsDefaults.php
+++ b/config/dmsDefaults.php
@@ -396,7 +396,7 @@ function catchFatalErrors($p_OnOff='On'){
 	$sUrl = KTInit::guessRootUrl();
 	global $default;
 	$sRootUrl = ($default->sslEnabled ? 'https' : 'http') .'://'.$_SERVER['HTTP_HOST'].$sUrl;
-	
+
 	$phperror='</div>><form name="catcher" action="'.$sRootUrl.'/customerrorpage.php" method="post" ><input type="hidden" name="fatal" value=""></form>
 	<script> document.catcher.fatal.value = document.getElementById("phperror").innerHTML; document.catcher.submit();</script>';
 	ini_set('error_append_string',$phperror);
@@ -727,6 +727,11 @@ if ($checkup !== true) {
         $default->versionName = $default->versionName.' '._kt('(Community Edition)');
     }
 }
+if (!extension_loaded('mbstring'))
+{
+	require_once(KT_LIB_DIR . '/lib/mbstring.inc.php');
+}
+
 
 require_once(KT_LIB_DIR . '/templating/kt3template.inc.php');
 $GLOBALS['main'] =new KTPage();
diff --git a/lib/mbstring.inc.php b/lib/mbstring.inc.php
new file mode 100644
index 0000000..308a6d9
--- /dev/null
+++ b/lib/mbstring.inc.php
@@ -0,0 +1,32 @@
+<?php
+
+if (!extension_loaded('mbstring'))
+{
+
+	function mb_detect_encoding($str, $encoding_list=null, $strict=null)
+	{
+		return mb_internal_encoding();
+	}
+
+	function mb_strtolower($str)
+	{
+		return strtolower($str);
+	}
+
+	function mb_internal_encoding($encoding=null)
+	{
+		return 'ISO-8859-1';
+	}
+
+	function mb_strlen($str, $encoding=null)
+	{
+		return strlen($str);
+	}
+
+	function mb_substr($str, $start, $length=null, $encoding=null)
+	{
+		return substr($str, $start, $length);
+	}
+}
+
+?>
\ No newline at end of file
diff --git a/setup/precheckup.php b/setup/precheckup.php
index 0fed2b9..b8cddfb 100644
--- a/setup/precheckup.php
+++ b/setup/precheckup.php
@@ -5,32 +5,32 @@
  * KnowledgeTree Open Source Edition
  * Document Management Made Simple
  * Copyright (C) 2004 - 2008 The Jam Warehouse Software (Pty) Limited
- * 
+ *
  * This program is free software; you can redistribute it and/or modify it under
  * the terms of the GNU General Public License version 3 as published by the
  * Free Software Foundation.
- * 
+ *
  * This program is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
  * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
  * details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- * 
+ *
  * You can contact The Jam Warehouse Software (Pty) Limited, Unit 1, Tramber Place,
  * Blake Street, Observatory, 7925 South Africa. or email info@knowledgetree.com.
- * 
+ *
  * The interactive user interfaces in modified source and object code versions
  * of this program must display Appropriate Legal Notices, as required under
  * Section 5 of the GNU General Public License version 3.
- * 
+ *
  * In accordance with Section 7(b) of the GNU General Public License version 3,
  * these Appropriate Legal Notices must retain the display of the "Powered by
- * KnowledgeTree" logo and retain the original copyright notice. If the display of the 
+ * KnowledgeTree" logo and retain the original copyright notice. If the display of the
  * logo is not reasonably feasible for technical reasons, the Appropriate Legal Notices
- * must display the words "Powered by KnowledgeTree" and retain the original 
- * copyright notice. 
+ * must display the words "Powered by KnowledgeTree" and retain the original
+ * copyright notice.
  * Contributor( s): ______________________________________
  *
  */
@@ -288,11 +288,52 @@ configuring your web server to use the .htaccess files that come with
 
 <?php echo htaccess()?>
 
+<?php
+
+$kturl = KTUtil::kt_url();
+
+?>
+
+<h2>General KnowledgeTree</h2>
+
+<table>
+<tbody>
+<tr>
+<th width=400>KnowledgeTree Server Directory</td>
+<td><?php echo KT_DIR;?></td>
+</tr>
+<tr>
+<th>KnowledgeTree URL</td>
+<td><?php echo $kturl;?></td>
+</tr>
+</tbody>
+</table>
+
+
 <h2>PHP version and extensions</h2>
 
 <p>This relates to your PHP installation environment - which version of
 PHP you are running, and which modules are available.</p>
 
+<?php
+$extensions = array(
+	'session'=>'Session',
+	'mysql'=>'MySQL',
+	'mbstring'=>'Multi Byte String',
+	'curl'=>'cURL',
+	'exif'=>'Exif',
+	'sockets'=>'Sockets',
+);
+$optional_extensions = array(
+	'gettext'=>array('Gettext','Only needed for using non-English languages'),
+	'fileinfo'=>array('Fileinfo','Provides better file identification support - not necessary if you use file extensions'),
+	'win32service'=>array('Win32 Service','Allows Microsoft Windows services to be controlled. '),
+	'openssl'=>array('OpenSSL','Provides encryption support')
+);
+
+
+?>
+
 <table width="100%">
   <tbody>
     <tr>
@@ -307,22 +348,27 @@ PHP you are running, and which modules are available.</p>
       <th>PHP version below 6</th>
       <td><?php echo $phpversion6text?></td>
     </tr>
+<?php
+	foreach($extensions as $ext=>$name)
+	{
+?>
     <tr>
-      <th>Session support</th>
-      <td><?php echo must_extension_loaded('session');?></td>
-    </tr>
-    <tr>
-      <th>MySQL support</th>
-      <td><?php echo must_extension_loaded('mysql');?></td>
-    </tr>
-    <tr>
-      <th>Gettext support</th>
-      <td><?php echo can_extension_loaded('gettext', "Only needed for using non-English languages");?></td>
+      <th><?php echo $name?> support</th>
+      <td><?php echo must_extension_loaded($ext);?></td>
     </tr>
+<?php
+	}
+	foreach($optional_extensions as $ext=>$detail)
+	{
+		list($name, $desc) = $detail;
+?>
     <tr>
-      <th>Fileinfo support</th>
-      <td><?php echo can_extension_loaded('fileinfo', "Provides better file identification support - not necessary if you use file extensions");?></td>
+      <th><?php echo $name?> support</th>
+      <td><?php echo can_extension_loaded($ext, $desc);?></td>
     </tr>
+<?php
+	}
+?>
   </tbody>
 </table>