software-center don't want to start

[Ngassam Nkwenga]

Binary package hint: software-center

After the upgrade I did today, just a while now, Software-center don't want to start.
from the Terminal this what ' get back :

<code>
natty@natty-PCV-RSM22-CE:~$ software-center
/usr/share/themes/Radiance/gtk-2.0/gtkrc:65: Invalid symbolic color 'link_color'
/usr/share/themes/Radiance/gtk-2.0/gtkrc:65: error: invalid identifier `link_color', expected valid identifier
Segmentation fault (core dumped)
natty@natty-PCV-RSM22-CE:~$
</code>

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: software-center 3.1.23.1
ProcVersionSignature: Ubuntu 2.6.38-6.34-generic 2.6.38-rc7
Uname: Linux 2.6.38-6-generic i686
Architecture: i386
Date: Wed Mar 9 22:18:32 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha i386 (20110212)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center
UpgradeStatus: Upgraded to natty on 2011-02-24 (12 days ago)

[Jean-Baptiste Lallement (jibel)]

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 731724, so it 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.