dpkg error when running apt-get upgrade.

[agent5150]

Hopeing someone can help with my problem. Please see the error at the end:

root@xbian:~# apt-get update
Hit http://mirrordirector.raspbian.org wheezy Release.gpg
Hit http://archive.raspberrypi.org wheezy Release.gpg
Hit http://mirrordirector.raspbian.org wheezy Release
Hit http://archive.raspberrypi.org wheezy Release
Hit http://dikonist.asuscomm.com wheezy Release.gpg
Hit http://dikonist.asuscomm.com wheezy Release
Hit http://mirrordirector.raspbian.org wheezy/main Sources
Hit http://archive.raspberrypi.org wheezy/main armhf Packages
Hit http://dikonist.asuscomm.com wheezy/main armhf Packages
Hit http://mirrordirector.raspbian.org wheezy/contrib Sources
Hit http://mirrordirector.raspbian.org wheezy/non-free Sources
Hit http://mirrordirector.raspbian.org wheezy/rpi Sources
Hit http://mirrordirector.raspbian.org wheezy/main armhf Packages
Hit http://xbian.brantje.com/ wheezy Release.gpg
Hit http://mirrordirector.raspbian.org wheezy/contrib armhf Packages
Hit http://xbian.brantje.com/ wheezy Release
Hit http://mirrordirector.raspbian.org wheezy/non-free armhf Packages
Hit http://xbian.brantje.com/ wheezy/main armhf Packages
Hit http://mirrordirector.raspbian.org wheezy/rpi armhf Packages
Ign http://archive.raspberrypi.org wheezy/main Translation-en_US
Ign http://archive.raspberrypi.org wheezy/main Translation-en
Ign http://dikonist.asuscomm.com wheezy/main Translation-en_US
Ign http://dikonist.asuscomm.com wheezy/main Translation-en
Ign http://xbian.brantje.com/ wheezy/main Translation-en_US
Ign http://xbian.brantje.com/ wheezy/main Translation-en
Ign http://mirrordirector.raspbian.org wheezy/contrib Translation-en_US
Ign http://mirrordirector.raspbian.org wheezy/contrib Translation-en
Ign http://mirrordirector.raspbian.org wheezy/main Translation-en_US
Ign http://mirrordirector.raspbian.org wheezy/main Translation-en
Ign http://mirrordirector.raspbian.org wheezy/non-free Translation-en_US
Ign http://mirrordirector.raspbian.org wheezy/non-free Translation-en
Ign http://mirrordirector.raspbian.org wheezy/rpi Translation-en_US
Ign http://mirrordirector.raspbian.org wheezy/rpi Translation-en
Reading package lists... Done
root@xbian:~# apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages have been kept back:
xbian-package-config-shell xbian-package-config-xbmc
xbian-package-initramfs-tools xbian-package-kernel xbian-package-splash
xbian-package-xbmc xbian-update
The following packages will be upgraded:
btrfs-tools
1 upgraded, 0 newly installed, 0 to remove and 7 not upgraded.
Need to get 0 B/1,318 kB of archives.
After this operation, 385 kB of additional disk space will be used.
Do you want to continue [Y/n]? y
E: Sub-process /usr/bin/dpkg exited unexpectedly
root@xbian:~#