[turba] Cannot select 'Create a new Contact List' from drop down menue.

[Helga Mayer]

Hello list,

we're using horde-webmail-1.2.4 in a productive environment and
  horde-webmail-1.2.6 for testing. In both versions I cannot
create new contact lists. I see the writing in the drop down menue,
but it's pale grey and it can't be selected.

I basically copied the configuration .php files from the php.dist files.
My turba/config/conf.php:

<?php
/* CONFIG START. DO NOT CHANGE ANYTHING IN OR AFTER THIS LINE. */
// $Horde: turba/config/conf.xml,v 1.6.2.6 2008/06/25 15:52:54 jan Exp $
$conf['menu']['import_export'] = true;
$conf['menu']['apps'] = array();
$conf['client']['addressbook'] = 'localsql';
$conf['shares']['source'] = 'localsql';
$conf['comments']['allow'] = true;
$conf['documents']['type'] = 'horde';
/* CONFIG END. DO NOT CHANGE ANYTHING IN OR BEFORE THIS LINE. */

Any hints are appreciated.

-- 
Helga Mayer