Capabilities mismatch with server - Cannot sync files between client on 9.04 and 9.10

[Fabio M. Panico]

Apparently there is a problem while trying to sync files in UbuntuOne from different client versions.
At home I have Ubuntu 9.04 and at work I've been using Ubuntu 9.10 (beta-RC) that will be released today, both with all updates.
After having made some changes to my UbuntuOne folder at work (9.10) yesterday I receive a message at home (9.04) saying it is not possible to sync because I "might have installed a version of client to which the server does not yet provide support."

Thank you very much for your help and please advice whether I should provide more info or make some test.
_______________________________

uname -a
Linux fbugnon-desktop 2.6.28-16-generic #55-Ubuntu SMP Tue Oct 20 19:48:32 UTC 2009 x86_64 GNU/Linux

ProblemType: Bug
.home.fbugnon..cache.ubuntuone.log.syncdaemon.exceptions.log: 2009-10-29 07:41:54,073 - ubuntuone.SyncDaemon.ActionQueue - ERROR - Capabilities query failed: The server doesn't have the requested capabilities
.home.fbugnon..config.ubuntuone.ubuntuone.client.conf:
 [ubuntuone]
 connected = True
 connect = 0
 show_applet = 1
 bookmarked = True
Architecture: amd64
CrashDB: ubuntuone
DistroRelease: Ubuntu 9.04
Package: ubuntuone-client 1.1+r269-0ubuntu1~ppa1~jaunty
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntuone-client
ThirdParty: True
Uname: Linux 2.6.28-16-generic x86_64
UnreportableReason: Este não é um pacotes Ubuntu genuíno