ubuntu-software broke

[Daznis]

Binary package hint: aptdaemon

ubuntu-software center broke down when installing "musescore".

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: aptdaemon 0.41+bzr646-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Annotation: Applying software changes failed
Architecture: amd64
Date: Mon Apr 18 19:59:07 2011
DesktopFile: /usr/share/aptdaemon/aptdaemon.desktop
ExecutablePath: /usr/sbin/aptd
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
PackageArchitecture: all
SourcePackage: aptdaemon
Title: <type 'exceptions.NameError'>: global name 'trans' is not defined
TransactionDepends: [['libqtscript4-xmlpatterns=0.1.0-3ubuntu3', 'libqtscript4-network=0.1.0-3ubuntu3', 'libqt4-script=4:4.7.2-0ubuntu6', 'libqtscript4-gui=0.1.0-3ubuntu3', 'phonon=4:4.7.0really4.5.0-0ubuntu3', 'libqtscript4-sql=0.1.0-3ubuntu3', 'libqtscript4-svg=0.1.0-3ubuntu3', 'libqtscript4-opengl=0.1.0-3ubuntu3', 'libqtscript4-xml=0.1.0-3ubuntu3', 'libqt4-xmlpatterns=4:4.7.2-0ubuntu6', 'libqtscript4-qtbindings=0.1.0-3ubuntu3', 'musescore-common=1.0+dfsg-2', 'musescore-soundfont-gm=1.0+dfsg-2', 'gawk=1:3.1.7.dfsg-5', 'libqt4-svg=4:4.7.2-0ubuntu6', 'libphonon4=4:4.7.0really4.5.0-0ubuntu3', 'phonon-backend-gstreamer=4:4.7.0really4.4.4-0ubuntu3', 'libqtscript4-webkit=0.1.0-3ubuntu3', 'libqtscript4-uitools=0.1.0-3ubuntu3', 'libqt4-scripttools=4:4.7.2-0ubuntu6', 'libqtwebkit4=2.1~really2.0.2-0ubuntu1', 'libqtscript4-core=0.1.0-3ubuntu3'], [], [], [], [], [], []]
TransactionErrorCode: error-unknown
TransactionKwargs: {}
TransactionLocale: en_US.UTF8
TransactionOutput:

TransactionPackages: [[dbus.String(u'musescore')], [], [], [], [], []]
TransactionRole: role-commit-packages
UpgradeStatus: No upgrade log present (probably fresh install)