[horde] Ldap not working

[taz]

Hello,
When I goto the address book and choose Shared Directory
and then have Name in the pull-down and try and do a search on a known
person I just get a blank page.   Any ideas how to troubleshoot and/or 
how to fix it?

Thanks,
Travis


Here is the shared Directory in my  sources.php file:

$cfgSources['Exchange'] = array(
    'title' => 'Shared Directory',
    'type' => 'ldap',
    'params' => array(
        'server' => 'rhs-server.weldre5j.k12.co.us',
        'port' => 389,
        'bind_dn' => 'cn=guest,dc=weldre5j,dc=k12,dc=co,dc=us',
        'bind_password' => 'password',
        'root' => 'cn=Users,dc=weldre5j,dc=k12,dc=co,dc=us',
        'filter' => ''
    ),
'map' => array(
                '__key' => 'dn',
                'name' => 'cn',
                'email' => 'mail'
        ),
        'search' => array(
                'name',
                'email'
        ),
'public' => true,
        'readonly' => true,
        'export' => false
);