Cannot sync "up" from client with funambol for outlook

Hi all,

I’ve installed a test server and I’m pretty pleased with egroupware however I can’t seem to find a way to synchronize any data (contacts, calendar, notes or tasks) from the client to the server.
I can see these entries in the apache log :
PHP Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in /usr/share/egroupware/syncml/contacts/lib/api.php on line 76
PHP Warning: array_key_exists() [function.array-key-exists]: The second argument should be either an array or an object in /usr/share/egroupware/syncml/contacts/lib/api.php on line 82

Informations :
OS : Ubuntu 9.10
Egroupware : 1.6002 with the new syncml extension.
Client : Outlook 2007 with funambol 8.0.5

I’ve tried egroupware 1.6001, 1.6002 and snapshot with postgresql and mysql, outlook 2007 and 2010 with stable and dev funambol client, and I’ve never been able to sync from the client to the server. I’ve also tried from thunderbird 3 with the same results. The sync from server to client have always worked very well though (Thunderbird 3.0, Outlook 2007 and 2010).

Any idea ?