Error replacing Ubuntu Software Center

[RaviSharan]

I was trying to install security/software updates using Update Manager. When Update Manager began applying changes, I got the following error message:

installArchives() failed: perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
 LANGUAGE = (unset),
 LC_ALL = (unset),
 LANG = "en_IN.ISO8859-1"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
 LANGUAGE = (unset),
 LC_ALL = (unset),
 LANG = "en_IN.ISO8859-1"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
 LANGUAGE = (unset),
 LC_ALL = (unset),
 LANG = "en_IN.ISO8859-1"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
locale: Cannot set LC_CTYPE to default locale: No such file or directory
locale: Cannot set LC_MESSAGES to default locale: No such file or directory
locale: Cannot set LC_ALL to default locale: No such file or directory
(Reading database ...
dpkg: warning: files list file for package `libfontenc1' missing, assuming package has no files currently installed.

dpkg: warning: files list file for package `libfolks25' missing, assuming package has no files currently installed.

dpkg: warning: files list file for package `libfolks-telepathy25' missing, assuming package has no files currently installed.

dpkg: warning: files list file for package `libfribidi0' missing, assuming package has no files currently installed.

dpkg: warning: files list file for package `libfontconfig1' missing, assuming package has no files currently installed.

(Reading database ... 5%%
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(Reading database ... 95%%
(Reading database ... 100%%
(Reading database ... 236440 files and directories currently installed.)
Preparing to replace app-install-data-partner 12.11.10 (using .../app-install-data-partner_12.11.10.1_all.deb) ...
Unpacking replacement app-install-data-partner ...
dpkg: error processing /var/cache/apt/archives/app-install-data-partner_12.11.10.1_all.deb (--unpack):
 trying to overwrite '/usr/share/app-install/desktop', which is also in package app-install-data 0.11.10.6
Preparing to replace software-center 5.0.2ubuntu0.1 (using .../software-center_5.0.3.1_all.deb) ...
Unpacking replacement software-center ...
dpkg: error processing /var/cache/apt/archives/software-center_5.0.3.1_all.deb (--unpack):
 trying to overwrite '/usr/share/app-install/desktop', which is also in package app-install-data-partner 12.11.10
Processing triggers for desktop-file-utils ...
Processing triggers for gnome-menus ...
Processing triggers for bamfdaemon ...
Rebuilding /usr/share/applications/bamf.index...
Processing triggers for hicolor-icon-theme ...
Errors were encountered while processing:
 /var/cache/apt/archives/app-install-data-partner_12.11.10.1_all.deb
 /var/cache/apt/archives/software-center_5.0.3.1_all.deb
Error in function:

I tried 'sudo apt-get clean' and then tried to update. But, still I am unable to install/replace Ubuntu Software Center and Applications Installer. Please help me.

[RaviSharan (ravisharanb)]

Still no response ???