Plesk horde blank page

If you are getting errors like this.

[sourcecode]

[Mon Dec 06 08:52:14 2010] [error] [client 86.134.177.135] PHP Warning:  include_once() [<a href=’function.include’>function.include</a>]: Failed opening ‘PEAR.php’ for inclusion (include_path=’/usr/share/psa-horde/lib:/usr/share/psa-horde/lib:/usr/share/psa-horde:/usr/share/psa-horde/pear:.’) in /usr/share/psa-horde/lib/core.php on line 37
[Mon Dec 06 08:52:14 2010] [error] [client 86.134.177.135] PHP Warning:  include_once(Log.php) [<a href=’function.include-once’>function.include-once</a>]: failed to open stream: No such file or directory in /usr/share/psa-horde/lib/Horde.php on line 14

[/sourcecode]

Edit this file

“/etc/httpd/conf.d/zz050a_horde_php_workaround.conf/etc/httpd/conf.d/zz050a_horde_php_workaround.conf”

from

[sourcecode]

php_admin_value include_path "/usr/share/psa-horde/lib:/usr/share/psa-horde:/usr/share/psa-horde/pear:."[/sourcecode]

To this

[sourcecode]php_admin_value include_path "/usr/share/psa-pear:/usr/share/psa-horde/lib:/usr/share/psa-horde:/usr/share/psa-horde/pear:."[/sourcecode]