Erro com o Software-center [RESOLVIDO]

Eu instalei o software-center do ubunto no meu linux mint, mas ele não que rodar:

sudo software-center
[sudo] password for cleonice:
2015-08-02 23:44:12,933 - softwarecenter.backend.zeitgeist_logger - WARNING - Support for Zeitgeist disabled

(software-center:12186): Gtk-WARNING **: Theme file for default has no name


(software-center:12186): Gtk-WARNING **: Theme file for default has no directories

2015-08-02 23:44:13,091 - 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 74, 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.

Eu instalei ele como mostrado nesse artigo:

- http://www.vivaolinux.com.br/dica/Software-Center-no-Linux-Mint

Minha versão do Linux mint:

cat /etc/*release*
DISTRIB_ID=LinuxMint
DISTRIB_RELEASE=17.1
DISTRIB_CODENAME=rebecca
DISTRIB_DESCRIPTION="Linux Mint 17.1 Rebecca"
DISTRIB_ID=LinuxMint
DISTRIB_RELEASE=17.1
DISTRIB_CODENAME=rebecca
DISTRIB_DESCRIPTION="Linux Mint 17.1 Rebecca"
NAME="Ubuntu"
VERSION="14.04.2 LTS, Trusty Tahr"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 14.04.2 LTS"
VERSION_ID="14.04"
HOME_URL="http://www.ubuntu.com/";
SUPPORT_URL="http://help.ubuntu.com/";
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/";
cat: /etc/upstream-release: É um diretório

Tem certeza que fez todos os passos corretamente? Já tentou reinstalar, fazendo todos os passos novamente?

Eu instalei e reinstalei 3 vezes e o mesmo erro aparece. A unica coisa que eu fiz de diferente do artigo é usar o gedit em vez do pluma.

Amigo, desinstale o que você instalou, e tente com essa dica - http://www.diolinux.com.br/2014/11/como-instalar-central-de-programas-do-ubuntu-no-linux-mint.html

Caso de algum erro, fala que eu tento ajuntar.

Vlw. Resolvido.

:)