root@Julian-Notebook:/home/julian/Downloads# software-center-gtk3
2013-07-08 14:37:18,929 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None'
2013-07-08 14:37:19,540 - softwarecenter.backend.reviews - WARNING - Could not get usefulness from server, no username in config file
2013-07-08 14:37:19,543 - softwarecenter.plugin - INFO - activating plugin '<module 'webapps_activation' from '/usr/share/software-center/softwarecenter/plugins/webapps_activation.pyc'>'
2013-07-08 14:37:19,552 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/lib/python2.7/dist-packages/gi/importer.py', 51, 'find_module')'
2013-07-08 14:37:19,551 - root - ERROR - Could not find any typelib for LaunchpadIntegration
2013-07-08 14:37:19,662 - softwarecenter.db.pkginfo_impl.aptcache - INFO - aptcache.open()
2013-07-08 14:37:22,577 - softwarecenter.ui.gtk3.widgets.exhibits - WARNING - download failed: '<class 'gi._glib.GError'>', 'Operation not supported'

(software-center-gtk3:19748): Gdk-ERROR **: The program 'software-center-gtk3' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadDrawable (invalid Pixmap or Window parameter)'.
  (Details: serial 2120 error_code 9 request_code 62 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the GDK_SYNCHRONIZE environment
   variable to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)
Trace/breakpoint trap (core dumped)