package gconf2 3.2.5-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127

[Zhu Hongtao]

I have just upgraded ubuntu from 10.04 to 12.04, and I found some errors when i install smplayer, the information is as following:

The following NEW packages will be installed:
  smplayer smplayer-themes{a} smplayer-translations{a}
The following partially installed packages will be configured:
  doc-base gconf2 libcanberra-gtk3-module
0 packages upgraded, 3 newly installed, 0 to remove and 0 not upgraded.
Need to get 4,970 kB of archives. After unpacking 13.6 MB will be used.
Do you want to continue? [Y/n/?] Y
Get: 1 http://debian.ustc.edu.cn/ubuntu/ precise/universe smplayer amd64 0.7.0-1ubuntu2 [1,327 kB]
Get: 2 http://debian.ustc.edu.cn/ubuntu/ precise/universe smplayer-themes all 0.1.20+dfsg-1 [2,025 kB]
Get: 3 http://debian.ustc.edu.cn/ubuntu/ precise/universe smplayer-translations all 0.7.0-1ubuntu2 [1,618 kB]
Fetched 4,970 kB in 49s (100 kB/s)
Selecting previously unselected package smplayer.
(Reading database ... 655706 files and directories currently installed.)
Unpacking smplayer (from .../smplayer_0.7.0-1ubuntu2_amd64.deb) ...
Selecting previously unselected package smplayer-themes.
Unpacking smplayer-themes (from .../smplayer-themes_0.1.20+dfsg-1_all.deb) ...
Selecting previously unselected package smplayer-translations.
Unpacking smplayer-translations (from .../smplayer-translations_0.7.0-1ubuntu2_all.deb) ...
Processing triggers for man-db ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for desktop-file-utils ...
Processing triggers for gnome-menus ...
Processing triggers for hicolor-icon-theme ...
Setting up doc-base (0.10.3) ...
/var/lib/dpkg/info/doc-base.postinst: line 33: install-docs: command not found
dpkg: error processing doc-base (--configure):
 subprocess installed post-installation script returned error exit status 127
Setting up gconf2 (3.2.5-0ubuntu2) ...
No apport report written because MaxReports is reached already
                                                              /var/lib/dpkg/info/gconf2.postinst: line 81: gconf-schemas: command not found
dpkg: error processing gconf2 (--configure):
 subprocess installed post-installation script returned error exit status 127
dpkg: dependency problems prevent configuration of libcanberra-gtk3-module:
 libcanberra-gtk3-module depends on gconf2 (>= 2.28.1-2); however:
  Package gconf2 is not configured yet.
dpkg: error processing libcanberra-gtk3-module (--configure):
 dependency problems - leaving unconfigured
Setting up smplayer (0.7.0-1ubuntu2) ...
No apport report written because MaxReports is reached already
                                                              No apport report written because MaxReports is reached already
                                                                                                                            Setting up smplayer-themes (0.1.20+dfsg-1) ...
Setting up smplayer-translations (0.7.0-1ubuntu2) ...
Errors were encountered while processing:
 doc-base
 gconf2
 libcanberra-gtk3-module
localepurge: Disk space freed in /usr/share/locale: 0 KiB
localepurge: Disk space freed in /usr/share/man: 0 KiB
localepurge: Disk space freed in /usr/share/gnome/help: 0 KiB
localepurge: Disk space freed in /usr/share/omf: 0 KiB

Total disk space freed by localepurge: 0 KiB

E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
Setting up doc-base (0.10.3) ...
/var/lib/dpkg/info/doc-base.postinst: line 33: install-docs: command not found
dpkg: error processing doc-base (--configure):
 subprocess installed post-installation script returned error exit status 127
Setting up gconf2 (3.2.5-0ubuntu2) ...
/var/lib/dpkg/info/gconf2.postinst: line 81: gconf-schemas: command not found
dpkg: error processing gconf2 (--configure):
 subprocess installed post-installation script returned error exit status 127
dpkg: dependency problems prevent configuration of libcanberra-gtk3-module:
 libcanberra-gtk3-module depends on gconf2 (>= 2.28.1-2); however:
  Package gconf2 is not configured yet.
dpkg: error processing libcanberra-gtk3-module (--configure):
 dependency problems - leaving unconfigured
Errors were encountered while processing:
 doc-base
 gconf2
 libcanberra-gtk3-module

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: gconf2 3.2.5-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21
Uname: Linux 3.2.0-27-generic x86_64
ApportVersion: 2.0.1-0ubuntu11
AptOrdering:
 doc-base: Configure
 gconf2: Configure
 libcanberra-gtk3-module: Configure
Architecture: amd64
Date: Thu Jul 26 11:46:07 2012
DuplicateSignature:
 Setting up doc-base (0.10.3) ...
 /var/lib/dpkg/info/doc-base.postinst: line 33: install-docs: command not found
 dpkg: error processing doc-base (--configure):
  subprocess installed post-installation script returned error exit status 127
ErrorMessage: subprocess installed post-installation script returned error exit status 127
InstallationMedia: Ubuntu-Server 10.04 LTS "Lucid Lynx" - Release amd64 (20100427)
SourcePackage: gconf
Title: package gconf2 3.2.5-0ubuntu2 failed to install/upgrade: subprocess installed post-installation script returned error exit status 127
UpgradeStatus: No upgrade log present (probably fresh install)