[horde] pear error

[test at inga-und-max.de]

hi list

i get the error:

Warning: main(PEAR.php): failed to open stream: No such file or directory in
/var/www/localhost/htdocs/horde/lib/Registry.php on line 13

Fatal error: main(): Failed opening required 'PEAR.php'
(include_path='.:/usr/lib/php') in
/var/www/localhost/htdocs/horde/lib/Registry.php on line 13

in test.php:

PEAR

    * PEAR - No
    * Check your PHP include_path setting to make sure it has the PEAR library
directory.
    * Recent PEAR - No
    * Mail - No
    * Log - No
    * DB - No
    * Net_Socket - No
    * Date - No
    * HTML_Common/HTML_Select - No

but pear is installed on my system.

thx for help