can't open Ubuntu software center

[telltom]

When i try to open it, it closes immediately. This just started happening today. I wanted to download Alarm-clock, so i got it from the synoptic package manager instead.

[tom.swartz07]

When i try to open it, it closes immediately. This just started happening today. I wanted to download Alarm-clock, so i got it from the synoptic package manager instead.

Try opening it from the terminal and see what prints out.

Open the terminal from Applications>Accessories>Terminal

then type

gksudo software-center

If it does the same thing, you will at least have a text output of the error. Post it back here.

[telltom]

I turned off the computer this morning, later i was able to open it without a problem. It must have needed a reboot for some strange reason. thanks..

[Razor338]

i have the same problem,here's what i get when open i open it from the terminal!


self._cache = apt.Cache(GtkMainIterationProgress())
File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 88, in __init__
self.open(progress)
File "/usr/lib/python2.6/dist-packages/apt/cache.py", line 130, in open
self._list.read_main_list()
SystemError: E:Type '‎eb' is not known on line 60 in source list /etc/apt/sources.list
2010-12-29 01:39:05,533 - softwarecenter.fixme - WARNING - logs to the root logger: '('/usr/share/software-center/softwarecenter/db/database.py', 96, 'open')'
2010-12-29 01:39:05,532 - root - WARNING - failed to add sca db Couldn't detect type of database
Traceback (most recent call last):
File "/usr/bin/software-center", line 90, in <module>
app = SoftwareCenterApp(datadir, xapian_base_path, options, args)
File "/usr/share/software-center/softwarecenter/app.py", line 316, in __init__
self.view_switcher = ViewSwitcher(self.view_manager, datadir, self.db, self.cache, self.icons)
File "/usr/share/software-center/softwarecenter/view/viewswitcher.py", line 59, in __init__
store = ViewSwitcherList(view_manager, datadir, db, cache, icons)
File "/usr/share/software-center/softwarecenter/view/viewswitcher.py", line 321, in __init__
self._update_channel_list()
File "/usr/share/software-center/softwarecenter/view/viewswitcher.py", line 399, in _update_channel_list
self._update_channel_list_installed_view()
File "/usr/share/software-center/softwarecenter/view/viewswitcher.py", line 452, in _update_channel_list_installed_view
if (pkgname in self.cache and
File "/usr/share/software-center/softwarecenter/apt/aptcache.py", line 128, in __contains__
return self._cache.__contains__(k)
AttributeError: 'NoneType' object has no attribute '__contains__'

[matt_symes]

Hi

Open a terminal and type

cat /etc/apt/sources.list

Post the output back here.

Kind regards

[Razor338]

herez what i got!!


# deb cdrom:[Ubuntu 10.10 _Maverick Meerkat_ - Release i386 (20101007)]/ maverick main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://us.archive.ubuntu.com/ubuntu/ maverick main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ maverick main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ maverick-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ maverick-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ maverick universe
deb-src http://us.archive.ubuntu.com/ubuntu/ maverick universe
deb http://us.archive.ubuntu.com/ubuntu/ maverick-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ maverick-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://us.archive.ubuntu.com/ubuntu/ maverick multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ maverick multiverse
deb http://us.archive.ubuntu.com/ubuntu/ maverick-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ maverick-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://us.archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ maverick-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu maverick partner
# deb-src http://archive.canonical.com/ubuntu maverick partner

## This software is not part of Ubuntu, but is offered by third-party
## developers who want to ship their latest software.
deb http://extras.ubuntu.com/ubuntu maverick main
deb-src http://extras.ubuntu.com/ubuntu maverick main

deb http://security.ubuntu.com/ubuntu maverick-security main restricted
deb-src http://security.ubuntu.com/ubuntu maverick-security main restricted
deb http://security.ubuntu.com/ubuntu maverick-security universe
deb-src http://security.ubuntu.com/ubuntu maverick-security universe
deb http://security.ubuntu.com/ubuntu maverick-security multiverse
deb-src http://security.ubuntu.com/ubuntu maverick-security multiverse
deb http://ppa.launchpad.net/cairo-dock-team/ppa/ubuntu maverick main ## Cairo-Dock-PPA-Stable
eb http://download.tuxfamily.org/syzygy42/ gutsy avant-window-navigator
deb-src http://download.tuxfamily.org/syzygy42/ gutsy avant-window-navigator

[Razor338]

i can't even update ubuntu,and wine is not working either!!(i can't open any exe files)

[matt_symes]

Hi

Have a look at your post where you posted /etc/apt/sources.list.
Look at the bottom and see the lines..

deb http://ppa.launchpad.net/cairo-dock-team/ppa/ubuntu maverick main ## Cairo-Dock-PPA-Stable
eb http://download.tuxfamily.org/syzygy42/ gutsy avant-window-navigator
deb-src http://download.tuxfamily.org/syzygy42/ gutsy avant-window-navigator

Well the second one

eb http://download.tuxfamily.org/syzygy42/ gutsy avant-window-navigator

wants to be

deb http://download.tuxfamily.org/syzygy42/ gutsy avant-window-navigator

To fix open a terminal and type

sudo nano /etc/apt/sources.list

Enter your password. Use the down arrow keys to get to the line and add the d

Press ctrl + o to save and ctrl + x to exit. (that is small O)

EDIT: deb http://download.tuxfamily.org/syzygy42/ gutsy avant-window-navigator
That is for gusty. Not what you want to be using anyhow.

Have a look at this

http://www.unixmen.com/linux-distrib...verick-meerkat

Kind regards

[matt_symes]

Hi

To run wine programs make sure the exe file has executable permissions.

Kind regards

[Razor338]

I did exactly as you said,but the problem still exist,i'll restart my pc and tell you whether the problem has been solved or not.