diff --git a/system/core/CodeIgniter.php b/system/core/CodeIgniter.php
index 6ac333a..99c261e 100644
--- a/system/core/CodeIgniter.php
+++ b/system/core/CodeIgniter.php
@@ -32,7 +32,7 @@
  *  Define the CodeIgniter Version
  * ------------------------------------------------------
  */
-	define('CI_VERSION', '2.0');
+	define('CI_VERSION', '2.0.1');
 
 /*
  * ------------------------------------------------------
diff --git a/user_guide/installation/downloads.html b/user_guide/installation/downloads.html
index ad65330..da93bb6 100644
--- a/user_guide/installation/downloads.html
+++ b/user_guide/installation/downloads.html
@@ -58,27 +58,28 @@
 <h1>Downloading CodeIgniter</h1>
 
 <ul>
-<li><a href="http://codeigniter.com/downloads/">CodeIgniter V 2.0.0 (Current version)</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.3.zip">CodeIgniter V 1.7.3</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.2.zip">CodeIgniter V 1.7.2</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.1.zip">CodeIgniter V 1.7.1</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.0.zip">CodeIgniter V 1.7.0</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.3.zip">CodeIgniter V 1.6.3</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.2.zip">CodeIgniter V 1.6.2</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.1.zip">CodeIgniter V 1.6.1</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.0.zip">CodeIgniter V 1.6.0</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.4.zip">CodeIgniter V 1.5.4</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.3.zip">CodeIgniter V 1.5.3</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.2.zip">CodeIgniter V 1.5.2</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.1.zip">CodeIgniter V 1.5.1</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.4.1.zip">CodeIgniter V 1.4.1</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.3.zip">CodeIgniter V 1.3.3</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.2.zip">CodeIgniter V 1.3.2</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.1.zip">CodeIgniter V 1.3.1</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.zip">CodeIgniter V 1.3</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.2.zip">CodeIgniter V 1.2</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.1b.zip">CodeIgniter V 1.1</a></li>
-<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.0b.zip">CodeIgniter V 1.0</a></li>
+	<li><a href="http://codeigniter.com/downloads/">CodeIgniter V 2.0.1 (Current version)</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_2.0.0.zip">CodeIgniter V 2.0.0</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.3.zip">CodeIgniter V 1.7.3</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.2.zip">CodeIgniter V 1.7.2</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.1.zip">CodeIgniter V 1.7.1</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.7.0.zip">CodeIgniter V 1.7.0</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.3.zip">CodeIgniter V 1.6.3</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.2.zip">CodeIgniter V 1.6.2</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.1.zip">CodeIgniter V 1.6.1</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.6.0.zip">CodeIgniter V 1.6.0</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.4.zip">CodeIgniter V 1.5.4</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.3.zip">CodeIgniter V 1.5.3</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.2.zip">CodeIgniter V 1.5.2</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.5.1.zip">CodeIgniter V 1.5.1</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.4.1.zip">CodeIgniter V 1.4.1</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.3.zip">CodeIgniter V 1.3.3</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.2.zip">CodeIgniter V 1.3.2</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.1.zip">CodeIgniter V 1.3.1</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.3.zip">CodeIgniter V 1.3</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.2.zip">CodeIgniter V 1.2</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.1b.zip">CodeIgniter V 1.1</a></li>
+	<li><a href="http://codeigniter.com/download_files/CodeIgniter_1.0b.zip">CodeIgniter V 1.0</a></li>
 </ul>
 
 
diff --git a/user_guide/installation/upgrade_201.html b/user_guide/installation/upgrade_201.html
new file mode 100644
index 0000000..ec01b9b
--- /dev/null
+++ b/user_guide/installation/upgrade_201.html
@@ -0,0 +1,89 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+
+<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
+<title>Upgrading from 2.0.0 to 2.0.1 : CodeIgniter User Guide</title>
+
+<style type='text/css' media='all'>@import url('../userguide.css');</style>
+<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
+
+<script type="text/javascript" src="../nav/nav.js"></script>
+<script type="text/javascript" src="../nav/prototype.lite.js"></script>
+<script type="text/javascript" src="../nav/moo.fx.js"></script>
+<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
+
+<meta http-equiv='expires' content='-1' />
+<meta http-equiv= 'pragma' content='no-cache' />
+<meta name='robots' content='all' />
+<meta name='author' content='ExpressionEngine Dev Team' />
+<meta name='description' content='CodeIgniter User Guide' />
+
+</head>
+<body>
+
+<!-- START NAVIGATION -->
+<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
+<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
+<div id="masthead">
+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
+<tr>
+<td><h1>CodeIgniter User Guide Version 2.0.0</h1></td>
+<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
+</tr>
+</table>
+</div>
+<!-- END NAVIGATION -->
+
+
+<!-- START BREADCRUMB -->
+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
+<tr>
+<td id="breadcrumb">
+<a href="http://codeigniter.com/">CodeIgniter Home</a> &nbsp;&#8250;&nbsp;
+<a href="../index.html">User Guide Home</a> &nbsp;&#8250;&nbsp;
+Upgrading from 2.0.0 to 2.0.1
+</td>
+<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide&nbsp; <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" />&nbsp;<input type="submit" class="submit" name="sa" value="Go" /></form></td>
+</tr>
+</table>
+<!-- END BREADCRUMB -->
+
+<br clear="all" />
+
+
+<!-- START CONTENT -->
+<div id="content">
+
+<h1>Upgrading from 2.0.0 to 2.0.1</h1>
+
+<p>Before performing an update you should take your site offline by replacing the index.php file with a static one.</p>
+
+
+<h2>Step 1: Update your CodeIgniter files</h2>
+
+<p>Replace all files and directories in your "system" folder and replace your index.php file. If any modifications were made to your index.php they will need to be made fresh in this new one.</p>
+
+<p class="important"><strong>Note:</strong> If you have any custom developed files in these folders please make copies of them first.</p>
+
+<h2>Step 2: Replace config/mimes.php</h2>
+
+<p>This config file has been updated to contain more mime types, please copy it to <kbd>application/config/mimes.php</kbd>.</p>
+
+</div>
+<!-- END CONTENT -->
+
+
+<div id="footer">
+<p>
+Previous Topic:&nbsp;&nbsp;<a href="index.html">Installation Instructions</a>
+&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
+<a href="#top">Top of Page</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
+<a href="../index.html">User Guide Home</a>&nbsp;&nbsp;&nbsp;&middot;&nbsp;&nbsp;
+Next Topic:&nbsp;&nbsp;<a href="troubleshooting.html">Troubleshooting</a>
+</p>
+<p><a href="http://codeigniter.com">CodeIgniter</a> &nbsp;&middot;&nbsp; Copyright &#169; 2006 - 2011 &nbsp;&middot;&nbsp; <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
+</div>
+
+</body>
+</html>
\ No newline at end of file
diff --git a/user_guide/installation/upgrading.html b/user_guide/installation/upgrading.html
index 9f95783..073e7a7 100644
--- a/user_guide/installation/upgrading.html
+++ b/user_guide/installation/upgrading.html
@@ -60,26 +60,27 @@
 <p>Please read the upgrade notes corresponding to the version you are upgrading from.</p>
 
 <ul>
-<li><a href="upgrade_200.html">Upgrading from 1.7.2 to 2.0</a></li>
-<li><a href="upgrade_172.html">Upgrading from 1.7.1 to 1.7.2</a></li>
-<li><a href="upgrade_171.html">Upgrading from 1.7.0 to 1.7.1</a></li>
-<li><a href="upgrade_170.html">Upgrading from 1.6.3 to 1.7.0</a></li>
-<li><a href="upgrade_163.html">Upgrading from 1.6.2 to 1.6.3</a></li>
-<li><a href="upgrade_162.html">Upgrading from 1.6.1 to 1.6.2</a></li>
-<li><a href="upgrade_161.html">Upgrading from 1.6.0 to 1.6.1</a></li>
-<li><a href="upgrade_160.html">Upgrading from 1.5.4 to 1.6.0</a></li>
-<li><a href="upgrade_154.html">Upgrading from 1.5.3 to 1.5.4</a></li>
-<li><a href="upgrade_153.html">Upgrading from 1.5.2 to 1.5.3</a></li>
-<li><a href="upgrade_152.html">Upgrading from 1.5.0 or 1.5.1 to 1.5.2</a></li>
-<li><a href="upgrade_150.html">Upgrading from 1.4.1 to 1.5.0</a></li>
-<li><a href="upgrade_141.html">Upgrading from 1.4.0 to 1.4.1</a></li>
-<li><a href="upgrade_140.html">Upgrading from 1.3.3 to 1.4.0</a></li>
-<li><a href="upgrade_133.html">Upgrading from 1.3.2 to 1.3.3</a></li>
-<li><a href="upgrade_132.html">Upgrading from 1.3.1 to 1.3.2</a></li>
-<li><a href="upgrade_131.html">Upgrading from 1.3 to 1.3.1</a></li>
-<li><a href="upgrade_130.html">Upgrading from 1.2 to 1.3</a></li>
-<li><a href="upgrade_120.html">Upgrading from 1.1 to 1.2</a></li>
-<li><a href="upgrade_b11.html">Upgrading from Beta 1.0 to Beta 1.1</a></li>
+	<li><a href="upgrade_201.html">Upgrading from 2.0 to 2.0.1</a></li>
+	<li><a href="upgrade_200.html">Upgrading from 1.7.2 to 2.0</a></li>
+	<li><a href="upgrade_172.html">Upgrading from 1.7.1 to 1.7.2</a></li>
+	<li><a href="upgrade_171.html">Upgrading from 1.7.0 to 1.7.1</a></li>
+	<li><a href="upgrade_170.html">Upgrading from 1.6.3 to 1.7.0</a></li>
+	<li><a href="upgrade_163.html">Upgrading from 1.6.2 to 1.6.3</a></li>
+	<li><a href="upgrade_162.html">Upgrading from 1.6.1 to 1.6.2</a></li>
+	<li><a href="upgrade_161.html">Upgrading from 1.6.0 to 1.6.1</a></li>
+	<li><a href="upgrade_160.html">Upgrading from 1.5.4 to 1.6.0</a></li>
+	<li><a href="upgrade_154.html">Upgrading from 1.5.3 to 1.5.4</a></li>
+	<li><a href="upgrade_153.html">Upgrading from 1.5.2 to 1.5.3</a></li>
+	<li><a href="upgrade_152.html">Upgrading from 1.5.0 or 1.5.1 to 1.5.2</a></li>
+	<li><a href="upgrade_150.html">Upgrading from 1.4.1 to 1.5.0</a></li>
+	<li><a href="upgrade_141.html">Upgrading from 1.4.0 to 1.4.1</a></li>
+	<li><a href="upgrade_140.html">Upgrading from 1.3.3 to 1.4.0</a></li>
+	<li><a href="upgrade_133.html">Upgrading from 1.3.2 to 1.3.3</a></li>
+	<li><a href="upgrade_132.html">Upgrading from 1.3.1 to 1.3.2</a></li>
+	<li><a href="upgrade_131.html">Upgrading from 1.3 to 1.3.1</a></li>
+	<li><a href="upgrade_130.html">Upgrading from 1.2 to 1.3</a></li>
+	<li><a href="upgrade_120.html">Upgrading from 1.1 to 1.2</a></li>
+	<li><a href="upgrade_b11.html">Upgrading from Beta 1.0 to Beta 1.1</a></li>
 </ul>