package linkchecker 7.4-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1

[mdmcginn]

I was running
sudo add-apt-repository ppa:nskaggs/checkbox-app-testing
sudo apt-get update && sudo apt-get install checkbox-app-testing

Part of the output is:

Setting up linkchecker (7.4-1) ...
apache2: Syntax error on line 210 of /etc/apache2/apache2.conf: Syntax error on line 1 of /etc/apache2/mods-enabled/proxy_html.load: Cannot load /usr/lib/libxml2.so.2 into server: /usr/lib/libxml2.so.2: cannot open shared object file: No such file or directory
Action 'configtest' failed.
The Apache error log may have more information.
   ...fail!
invoke-rc.d: initscript apache2, action "reload" failed.
dpkg: error processing linkchecker (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 linkchecker

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: linkchecker 7.4-1
ProcVersionSignature: Ubuntu 3.2.0-20.33-generic-pae 3.2.12
Uname: Linux 3.2.0-20-generic-pae i686
ApportVersion: 1.95-0ubuntu1
AptOrdering:
 checkbox-app-testing: Install
 linkchecker: Configure
 checkbox-app-testing: Configure
Architecture: i386
Date: Fri Mar 30 04:31:33 2012
ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
SourcePackage: linkchecker
Title: package linkchecker 7.4-1 failed to install/upgrade: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-03-30 (0 days ago)
modified.conffile..etc.linkchecker.logging.conf: [deleted]

[mdmcginn (mcweb)]

See https://bugs.launchpad.net/ubuntu/+source/mod-proxy-html/+bug/964397

My solution consists of changing in /etc/apache2/mods-available/proxy_html.load
LoadFile /usr/lib/libxml2.so.2
into :
LoadFile /usr/lib/i386-linux-gnu/libxml2.so.2

[mdmcginn (mcweb)]

Correction: this resembles the other bug, except it's for 386 not AMD64.