... so plesk wasn't properly configuring the include path all along. 
Still not a Horde bug.

Chuck



You have a reason, answer from swsoft:



Yes, you are right, Webmail Horde is now not working with PHP 5.2.5 
version. This is because PHP developers fixed some critical issues and 
that affected PHP configuration files. You can find more information 
here:



http://bugs.php.net/bug.php?id=35261

http://bugs.php.net/bug.php?id=41561



PHP 5.2.5 support is already planned in Plesk 8.3.0 that should be 
available in December.



Thiough you can use PHP 5.2.5 right now. Just install it and make sure 
that you replace the following lines for Webmail Virtual Host in 
/etc/apache2/conf.d/zz010_psa_httpd.conf:



php_admin_value include_path 
"/usr/share/psa-horde:/usr/share/psa-horde/pear:."



to:



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



After that restart Apache for changes to take effect:



# /etc/init.d/apache2 restart





Thanks for you patience.

Look at the error message, specifically the include_path:

include_path='/usr/share/psa-horde:/usr/share/psa-horde/pear:.



Wherever you have Horde/String.php installed, it's not one of those 
directories. Or it's possible this is a problem with PHP 5.2.5 and the 
include_path. Either way this is not a Horde bug. And again, you need 
to talk to the distributor/provider of psa-horde - we don't build it. 
If you really mean that you are the author of psa-horde, then see 
above again.

More informations, the link to webmail:

http://webmail.phpbb-services.com/



And I join the file Browser.php

I am the provider, you have a Reason, on line 4, there was:

Include_once 'Horde/String.php';



The problem persists:

Warning: include_once(Horde/String.php) [function.include-once]: 
failed to open stream: No such file or directory in 
/usr/share/psa-horde/lib/Horde/Browser.php on line 4



Warning: include_once() [function.include]: Failed opening 
'Horde/String.php' for inclusion 
(include_path='/usr/share/psa-horde:/usr/share/psa-horde/pear:.') in 
/usr/share/psa-horde/lib/Horde/Browser.php on line 4



The file String.php is present.

If I try to modifiy:

Include_once 'Horde/String.php';



By:

Include_once 'String.php';



The error gone, but I get a blanck page.



I am not alone with this problem, as you can see here:

http://forum.swsoft.com/showthread.php?s=&threadid=46867



Regards.

The leading / in that require line is not in any version of 
Browser.php provided by Horde (see 
http://cvs.horde.org/co.php?r=1.153.2.52&f=framework%2FBrowser%2FBrowser.php, 
for example - I guessed a Horde version since you put this in the 
wrong queue and didn't give a Horde version number). Talk to whoever 
provides psa-horde.

Hi,



After an upgrade of PHP5 (from PHP 5.2.4 to PHP 5.2.5) it's impossible 
to access to Webmail Horde.



An error occured:

Warning: require_once(/Horde/String.php) [function.require-once]: 
failed to open stream: No such file or directory in 
/usr/share/psa-horde/lib/Horde/Browser.php on line 4



Fatal error: require_once() [function.require]: Failed opening 
required '/Horde/String.php' 
(include_path='/usr/share/psa-horde:/usr/share/psa-horde/pear:.') in 
/usr/share/psa-horde/lib/Horde/Browser.php on line 4



Here, we can find:

Require_once '/Horde/String.php';



What can I Do ?



Thanks per advance