apt-clone crashed with KeyError in getmember(): "filename './etc/apt/sources.list.d' not found"

[Qusai Abu Hilal]

Binary package hint: apt-clone

I tried to install Ubuntu beta 1, and at the end it shows me this error !
I installed it on a previous installation (I erase the / and I have the HOME on another partition).
This was by launching it from terminal (because with migration-assistant there is another problem):
sudo ubiquity --no-migration-assistant

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: apt-clone 0.1.2
ProcVersionSignature: Ubuntu 2.6.38-7.39-generic 2.6.38
Uname: Linux 2.6.38-7-generic x86_64
Architecture: amd64
Date: Sun Apr 3 07:29:42 2011
ExecutablePath: /usr/bin/apt-clone
InterpreterPath: /usr/bin/python2.7
LiveMediaBuild: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110330)
ProcCmdline: /usr/bin/python /usr/bin/apt-clone restore-new-distro /target/ubiquity-apt-clone/apt-clone-state-hostname.tar.gz natty --destination /target
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 LANGUAGE=en_US:en
 SHELL=/bin/bash
 LC_COLLATE=C
PythonArgs: ['/usr/bin/apt-clone', 'restore-new-distro', '/target/ubiquity-apt-clone/apt-clone-state-hostname.tar.gz', 'natty', '--destination', '/target']
SourcePackage: apt-clone
Title: apt-clone crashed with KeyError in getmember(): "filename './etc/apt/sources.list.d' not found"
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

[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 #745397, 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.