horde error

[alcapone]

after use plesk reconfiguration tool for settings permissions horde gives this error. i reinstall horde but nothing change! pls help me.


Warning: main(PEAR.php) [function.main]: failed to open stream: No such file or directory in C:\Inetpub\vhosts\webmail\horde\lib\core.php on line 26

Warning: main() [function.include]: Failed opening 'PEAR.php' for inclusion (include_path='C:\Inetpub\vhosts\webmail\horde\lib;.;./includes;./pear') in C:\Inetpub\vhosts\webmail\horde\lib\core.php on line 26

Warning: main(Log.php) [function.main]: failed to open stream: No such file or directory in C:\Inetpub\vhosts\webmail\horde\lib\Horde.php on line 3

Warning: main() [function.include]: Failed opening 'Log.php' for inclusion (include_path='C:\Inetpub\vhosts\webmail\horde\lib;.;./includes;./pear') in C:\Inetpub\vhosts\webmail\horde\lib\Horde.php on line 3

Warning: _connect(DB.php) [function.-connect]: failed to open stream: No such file or directory in C:\Inetpub\vhosts\webmail\horde\lib\Horde\DataTree\sql.php on line 1255

Fatal error: _connect() [function.require]: Failed opening required 'DB.php' (include_path='C:\Inetpub\vhosts\webmail\horde\lib;.;./includes;./pear') in C:\Inetpub\vhosts\webmail\horde\lib\Horde\DataTree\sql.php on line 1255