U1 client won't work; AttributeError: '_upgrade_metadata_6'

[BadBoy]

Binary package hint: ubuntuone-client

Ubuntu One client when clicked launches Apport.
Fresh 9.10 installation.

ProblemType: Bug
.home.potworny..config.ubuntuone.syncdaemon.conf:
 [bandwidth_throttling]
 read_limit = 2097152
 write_limit = 2097152
 on = False
.home.potworny..config.ubuntuone.ubuntuone.client.conf:
 [ubuntuone]
 bookmarked = True
 connected = True
 connect = 0
 show_applet = 1
Architecture: amd64
CheckboxSubmission: cd2f25406392da1a8e2b14649fd32386
CheckboxSystem: daed2f3d6643b4a84b4520a2427f8c2b
Date: Thu Apr 8 12:58:09 2010
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
Package: ubuntuone-client 1.0.3-0ubuntu1
PackageArchitecture: all
ProcEnviron:
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.31-20.58-generic
SourcePackage: ubuntuone-client
Uname: Linux 2.6.31-20-generic x86_64

[Duane Hinnen (duanedesign)]

BadBoy,
Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 517505, so it is being marked as such. It looks like at some point you installed the trunk version of Ubuntu One and then went back to an older version. The newer versions of U1 use a different kind of metadata that is not compatible with the older versions. 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.

As noted in bug #517505, the workaround for this problem is:
1. Quit the Ubuntu One client. From the applet select Quit. Then open a Terminal (Applications > Accessories > Terminal) and run the following to quit the syncdaemon.

u1sdtool -q

2. Delete the old metadata. In a Terminal run.

rm -rf ~/.local/share/ubuntuone

3. Start Ubuntu One as you normally would Applications > Internet > Ubuntu One

Thank you,
duanedesign