apache refuses to load when the ProxyHTMLEnable directive is used

[Christopher Hotchkiss]

Description: Ubuntu 10.04 LTS
Release: 10.04
libapache2-mod-proxy-html:
  Installed: 3.0.1-1
  Candidate: 3.0.1-1
  Version table:
 *** 3.0.1-1 0
        500 http://us.archive.ubuntu.com/ubuntu/ lucid/universe Packages
        100 /var/lib/dpkg/status

I am trying to setup apache in a reverse proxy model and need to have the html, css and js files rewritten so the links work properly. In the past I have used mod_html_proxy however its key module no longer works with the following error output when starting the server:

Syntax error on line 23 of /etc/apache2/sites-enabled/000-default:
Invalid command 'ProxyHTMLEnable', perhaps misspelled or defined by a module not included in the server configuration

My relevant apache config is as follows:
<VirtualHost *:80>

 DocumentRoot /var/www

 ErrorLog /var/log/apache2/error.log

 LogLevel warn

 CustomLog /var/log/apache2/access.log combined

 ProxyRequests off

 SetOutputFilter proxy-html

 ProxyPass /hudson http://localhost:8080/
 ProxyPass /tomcat http://localhost:8081/
 ProxyHTMLURLMap http://localhost:8080 /hudson
 ProxyHTMLURLMap http://localhost:8081 /tomcat

 <Location /hudson/>
  ProxyPassReverse /
  ProxyHTMLEnable On
  ProxyHTMLURLMap / /hudson/
  RequestHeader unset Accept-Encoding
 </Location>

 <Location /tomcat/>
  ProxyPassReverse /
  ProxyHTMLEnable On
  ProxyHTMLURLMap / /tomcat/
  RequestHeader unset Accept-Encoding
 </Location>

</VirtualHost>

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: libapache2-mod-proxy-html 3.0.1-1
ProcVersionSignature: Ubuntu 2.6.32-22.33-server 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-server x86_64
Architecture: amd64
Date: Thu May 13 19:26:29 2010
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: mod-proxy-html

[JoE (joehillen)]

"ProxyHTMLEnable" is part of the 3.1.x version of mod_proxy_html. You have the 3.0.x version installed.