Software Center does not start

[Miroslav Stoyanov]

Binary package hint: software-center

11.04 clean standalone install (not Virtual Box). Software Center doesn't start with the following error message from the terminal (note I tried that with no other programs open right after a reboot):

2010-12-03 17:55:36,531 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/share/software-center/softwarecenter/db/database.py', 96, 'open')'
2010-12-03 17:55:36,531 - root - WARNING - failed to add sca db Couldn't stat '/home/miro/.cache/software-center/software-center-agent.db' (No such file or directory)
Traceback (most recent call last):
  File "/usr/bin/software-center", line 109, in <module>
    app = SoftwareCenterApp(datadir, xapian_base_path, options, args)
  File "/usr/share/software-center/softwarecenter/app.py", line 209, in __init__
    self.navhistory_forward_action)
  File "/usr/share/software-center/softwarecenter/view/availablepane.py", line 100, in __init__
    self._build_ui()
  File "/usr/share/software-center/softwarecenter/view/availablepane.py", line 111, in _build_ui
    self.apps_filter)
  File "/usr/share/software-center/softwarecenter/view/catview_gtk.py", line 256, in __init__
    self.build(desktopdir)
  File "/usr/share/software-center/softwarecenter/view/catview_gtk.py", line 497, in build
    self._build_homepage_view()
  File "/usr/share/software-center/softwarecenter/view/catview_gtk.py", line 327, in _build_homepage_view
    self._append_featured_and_new()
  File "/usr/share/software-center/softwarecenter/view/catview_gtk.py", line 412, in _append_featured_and_new
    nonapps_visible=AppStore.NONAPPS_ALWAYS_VISIBLE)
  File "/usr/share/software-center/softwarecenter/view/appview.py", line 180, in __init__
    q.get_description() for q in search_query])):
AttributeError: 'Query' object has no attribute 'get_description'

Synaptic and Update Manager work fine.

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: software-center 3.1.3
ProcVersionSignature: Ubuntu 2.6.37-7.19-generic 2.6.37-rc3
Uname: Linux 2.6.37-7-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Dec 3 17:57:57 2010
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Alpha amd64 (20101202)
PackageArchitecture: all
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: software-center