ok, tested it and now i get this

2010-10-08T11:58:03+02:00 DEBUG: HORDE [horde] Compiling server 
changes from 1970-01-01 01:00:00 to 2010-10-08 11:58:03 [pid 11633 on 
line 640 of "/var/www/_horde/horde/framework/SyncML/SyncML/Sync.php"]
2010-10-08T11:58:03+02:00 ERR: HORDE [horde] contacts/list or 
contacts/listBy failed while retrieving server additions:The method 
"contacts/listUids" is not defined in the Horde Registry. [pid 11633 
on line 596 of "/var/www/_horde/horde/framework/SyncML/SyncML/Sync.php"]
2010-10-08T11:58:03+02:00 DEBUG: HORDE [horde] Sending 0 server 
changes for client URI card [pid 11633 on line 640 of 
"/var/www/_horde/horde/framework/SyncML/SyncML/Sync.php"]

Assuming this fixed the issue.

Try now?

Changes have been made in Git for this ticket:

Track changes to applications' listUid methods.
Bug: 9253

http://git.horde.org/diff.php/framework/ActiveSync/lib/Horde/ActiveSync/Driver/Horde.php?rt=horde-git&r1=1869e553d2cab4b0d5556f7b5e4c979d329da1b4&r2=a654398ea3fddf980a3916f5748d4f5ce224bb47
http://git.horde.org/diff.php/framework/ActiveSync/lib/Horde/ActiveSync/Driver/Horde/Connector/Registry.php?rt=horde-git&r1=a90c8acb3cf4fc4eb219799aa297a672709532a6&r2=a654398ea3fddf980a3916f5748d4f5ce224bb47

Changes have been made in Git for this ticket:

Standardize on *_Api::listUids() method name for api methods that, 
well, return Uids.
Kronolith_Api::listUids() functionality changed slightly with this 
commit - it now
no longer returns events that represent exceptions, and only includes 
recurring events
once within the requested time period. It looks like the syncml code 
was the only code
currently calling this method, so there should be no issues with this change.

For the other apps, this only represents a method name change.

Bug: 9253

http://git.horde.org/diff.php/framework/SyncML/SyncML/Backend/Horde.php?rt=horde-git&r1=a0ce9ace9c3114b59d4926dd43c89cd19f4794c4&r2=77e901ff8b7f1689c8336e2d5fa6d938cede86d6
http://git.horde.org/diff.php/kronolith/lib/Api.php?rt=horde-git&r1=474382a60011932d21b626aae790da872f1e041e&r2=77e901ff8b7f1689c8336e2d5fa6d938cede86d6
http://git.horde.org/diff.php/mnemo/lib/Api.php?rt=horde-git&r1=7dc54178e1d51a5a1431bfbb88a29a29a47cc5f4&r2=77e901ff8b7f1689c8336e2d5fa6d938cede86d6
http://git.horde.org/diff.php/nag/lib/Api.php?rt=horde-git&r1=474382a60011932d21b626aae790da872f1e041e&r2=77e901ff8b7f1689c8336e2d5fa6d938cede86d6
http://git.horde.org/diff.php/turba/lib/Api.php?rt=horde-git&r1=e0dc07e2b0032aa4a2b3c8ab12dafa66562fd105&r2=77e901ff8b7f1689c8336e2d5fa6d938cede86d6

Eventually I would like to have a separate API just for 
synchronization stuff, but until then, any method name works.

It looks like the original list methods were removed when the APIs 
were refactored for H4.  I'll work at re-adding a standardized synch 
api, though we can't revert back to using "list" since this is a 
reserved word in PHP.

Maybe something like listIds?

The whole api calling is completely broken. Instead of the 
standardized list() methods there are all kind of listEvents(), 
listTasks() methods etc which take different parameters and return 
different data structures, yet still are handled all the same. This 
should be reverted somehow, we need standard application interfaces 
for synching.

its line 144
$data = $registry->{$database}->{$apimap[$database]}(
                                 
SyncML_Backend::getParameter($databaseURI, 'source'));

Where exactly, if you already tracked it down to that file?

hi,

in  lib/SyncML/Backend/Horde.php the $data array for calendars after a 
initial/slow sync is filled
like

[date1]
    [suid1]->[calendar1]
    [suid2]->[calendar2]
[date2]
    [suid3]->[calendar3]

but its expected to be a
[suid1]->[calendar1]
[suid2]->[calendar2]
[suid3]->[calendar3]

structure. So no events are sent to the client, contacts do work as 
they are in that format