ubuntuone-login crashed with ValueError in call_async(): Unable to guess signature from an empty dict

[Rems]

Binary package hint: ubuntuone-client

it pop up i did not get a chance to read it

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: ubuntuone-client 1.5.6-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic x86_64
Architecture: amd64
Date: Fri Mar 18 14:36:22 2011
ExecutablePath: /usr/lib/ubuntuone-client/ubuntuone-login
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python /usr/lib/ubuntuone-client/ubuntuone-login
ProcEnviron:
 SHELL=/bin/bash
 LC_MESSAGES=en_US.UTF-8
 LANGUAGE=en_US:en
 LANG=ht_HT.UTF-8
PythonArgs: ['/usr/lib/ubuntuone-client/ubuntuone-login']
SourcePackage: ubuntuone-client
Title: ubuntuone-login crashed with ValueError in call_async(): Unable to guess signature from an empty dict
UbuntuOneSyncdaemonExceptionsLog:
 2011-03-18 14:36:47,051 - ubuntuone.SyncDaemon.DBus - ERROR - Handling DBus error on _request_token: DBusException(dbus.String(u'Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.'),).
 2011-03-18 14:36:47,052 - twisted - ERROR - Unhandled error in Deferred:
 2011-03-18 14:36:47,064 - twisted - ERROR - Unhandled Error
 Traceback (most recent call last):
 Failure: dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
UbuntuOneUserSyncdaemonConfig:
 [bandwidth_throttling]
 read_limit = 2097152
 write_limit = 2097152
 on = False
UpgradeStatus: Upgraded to natty on 2011-03-18 (0 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

[Apport retracing service (apport)]

Thank you for taking the time to report this crash and helping to make Ubuntu better. This particular crash has already been reported and is a duplicate of bug #711162, so is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Please continue to report any other bugs you may find.