A few days ago I installed Ubuntu 13.04. After installation I ran few programs one by one to see that if everything worked fine.
At that time the Software Center ran and it listed some software in the window. But now two days after installation, when I open the Software Center it does not list any software at all. I closed it and ran it from terminal by typing
sudo software-center as suggested in some forums, the terminal shows the following error:
root@engrali-OptiPlex-760:~# sudo software-center 2013-08-13 21:23:50,366 - softwarecenter.ui.gtk3.app - INFO - setting up proxy 'None' Traceback (most recent call last): File "/usr/bin/software-center", line 130, in <module> app = SoftwareCenterAppGtk3(options, args) File "/usr/share/software-center/softwarecenter/ui/gtk3/app.py", line 338, in __init__ self.icons) File "/usr/share/software-center/softwarecenter/ui/gtk3/session/appmanager.py", line 66, in __init__ self.oauth_token = helper.find_oauth_token_sync() File "/usr/share/software-center/softwarecenter/backend/ubuntusso.py", line 141, in find_oauth_token_sync sso.find_credentials() File "/usr/share/software-center/softwarecenter/backend/login_impl/login_sso.py", line 75, in find_credentials self.proxy.find_credentials(self.appname, self._get_params()) File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 70, in __call__ return self._proxy_method(*args, **keywords) File "/usr/lib/python2.7/dist-packages/dbus/proxies.py", line 145, in __call__ **keywords) File "/usr/lib/python2.7/dist-packages/dbus/connection.py", line 651, in call_blocking message, timeout) dbus.exceptions.DBusException: org.freedesktop.DBus.Error.NoReply: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.
please, can someone help me to solve this problem?