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I cannot run sudo update-manager. I dont know whats wrong. Do you know?

(precise)acer@localhost:~$ sudo update-manager
[sudo] password for acer: 

(process:5761): Gtk-WARNING **: Locale not supported by C library.
Using the fallback 'C' locale.
WARNING:root:estimate_kernel_size_in_boot() returned '0'?
Traceback (most recent call last):
File "/usr/bin/update-manager", line 64, in <module>
help=_("Directory that contains the data files").decode(enc))
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc3 in position 17: ordinal not           in range(128)

(precise)acer@localhost:~$ sudo dpkg-reconfigure locales
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
LANGUAGE = "sv_SV:en",
LC_ALL = (unset),
LANG = "sv_SV.UTF-8"
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
Generating locales...
en_AG.UTF-8... up-to-date
en_AU.UTF-8... up-to-date
en_BW.UTF-8... up-to-date
en_CA.UTF-8... up-to-date
en_DK.UTF-8... up-to-date
en_GB.UTF-8... up-to-date
en_HK.UTF-8... up-to-date
en_IE.UTF-8... up-to-date
en_IN.UTF-8... up-to-date
en_NG.UTF-8... up-to-date
en_NZ.UTF-8... up-to-date
en_PH.UTF-8... up-to-date
en_SG.UTF-8... up-to-date
en_US.UTF-8... up-to-date
en_ZA.UTF-8... up-to-date
en_ZM.UTF-8... up-to-date
en_ZW.UTF-8... up-to-date
sv_FI.UTF-8... up-to-date
sv_SE.UTF-8... up-to-date
Generation complete.

I use swedish language, but not swedish keyboard layout beacuse i dont know how to install that.

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open your terminal and type as

sudo apt-get install --reinstall update-manager

then try again.

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accept the answer if its helped you. – Raja Aug 25 '13 at 15:14

One problem is that your locale is incorrectly set; there is no "sv_SV.UTF-8" locale.

Please use System Settings -> Language Support to select Swedish for both the language and the regional formats. Then, after you have logged out and re-logged in, try to run update-manager again.

Go to System Settings -> Keyboard Layout to set a keyboard layout that matches your physical keyboard.

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