telepathy-butterfly crashed with TypeError: _on_session_completed() takes exactly 3 arguments (2 given)

[Dave P]

Binary package hint: telepathy-butterfly

all I did was make an account on empathy and this error popped up

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: telepathy-butterfly 0.5.15-1
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Sun Mar 27 15:38:41 2011
EcryptfsInUse: Yes
ExecutablePath: /usr/lib/telepathy/telepathy-butterfly
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110302)
InterpreterPath: /usr/bin/python2.7
ProcCmdline: /usr/bin/python /usr/lib/telepathy/telepathy-butterfly
ProcEnviron:
 SHELL=/bin/bash
 LANGUAGE=en_CA:en
 LANG=en_CA.UTF-8
PythonArgs: ['/usr/lib/telepathy/telepathy-butterfly']
SourcePackage: telepathy-butterfly
Title: telepathy-butterfly crashed with TypeError: _on_session_completed() takes exactly 3 arguments (2 given)
Traceback: TypeError: _on_session_completed() takes exactly 3 arguments (2 given)
UpgradeStatus: Upgraded to natty on 2011-03-26 (0 days ago)
UserGroups: adm admin cdrom dialout disk 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 #735815, 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.