[horde] horde intall: builtin driver not found

[Matthias]

Hello,

I am trying to install horde via pear.
webmail-install produces the errors below.

Can anybody point me to what needs to be done/installe?

Thanx for any help

Matthias


Installing Horde Groupware Webmail Edition

====================

Fatal Error:
"builtin" driver (for Horde_SessionHandler_Storage not found).
In /usr/share/php/Horde/Core/Factory/Base.php on line 70

1. Horde_Core_Bundle->init() /usr/bin/webmail-install:30
2. Horde_Registry::appInit() /usr/share/php/Horde/Core/Bundle.php:60
3. Horde_Registry->__construct() /usr/share/php/Horde/Registry.php:253
4. Horde_Session->setup() /usr/share/php/Horde/Registry.php:488
5. Horde_Injector->createInstance() /usr/share/php/Horde/Session.php:186
6.
Horde_Injector_Binder_Factory->create() /usr/share/php/Horde/Injector.php:213
7.
Horde_Core_Factory_SessionHandler->create() /usr/share/php/Horde/Injector/Binder/Factory.php:111
8.
Horde_Core_Factory_Base->_getDriverName() /usr/share/php/Horde/Core/Factory/SessionHandler.php:73


-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 490 bytes
Desc: This is a digitally signed message part
URL: <http://lists.horde.org/archives/horde/attachments/20130829/2cd8185a/attachment.bin>