ActiveSync: unsupported database driver

[Jan Kowalsky]

Hi all,

while trying to access ActiveSync in 

/usr/share/kolab-syncroton/logs/errors i get:

~~~~~~
[14-Nov-2013 15:54:35 +0100]: DB Error: Configuration error. Unsupported 
database driver:  in /usr/share/kolab-syncroton/lib/ext/Roundcube/rcube_db.php 
on line 79 (GET /Microsoft-Server-ActiveSync)
~~~~~~


My Client says only: Invalid EAS-Server-URL

When I access 

https://example.com/Microsoft-Server-ActiveSync

I get an empty page.

Who has got it allready work?
(Debian 7.0)


Thanks for any hints.

Kind regards
Jan