[sork] failed to change password

[akanksha prabhat]

I have download the latest CVS version of passwd. MY
horde and iMp are working. 
When i try to change password 
I get this 
Notice: Undefined offset: 1 in
/var/www/html/horde/passwd/lib/Driver/vpopmail.php on
line 115

Warning: Cannot add header information - headers
already sent by (output started at
/var/www/html/horde/passwd/lib/Driver/vpopmail.php:115)
in
/var/www/html/horde/passwd/templates/common-header.inc
on line 4

Warning: Cannot add header information - headers
already sent by (output started at
/var/www/html/horde/passwd/lib/Driver/vpopmail.php:115)


  Failure in changing password: User not found

THis is my Backends.php

$backends['vpopmail'] = array (
    'name' => 'vpopmail Authentication',
    'preferred' => '',
    'password policy' => array(
        'minLength' => 3,
        'maxLength' => 8,
        'maxSpace' => 0,
        'minUpper' => 0,
        'minLower' => 0,
        'minNumeric' => 0
    ),
    'driver' => 'vpopmail',
    'params' => array(
        'phptype'    => 'mysql',
        'hostspec'   => 'localhost',
        'username'   => 'vpopmail',
        'password'   => 'akanksha',
        //'encryption' => '',
        'database'   => 'vpopmail',
        'table'      => 'vpopmail',
        'name'    => 'pw_name',
        'domain'  => 'pw_domain',
	'passwd' =>  'pw_passwd',
	'clear_passwd' => 'pw_clear_passwd',
	'use_clear_passwd' => true
    )
);

thanks 
akanksha

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