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How do I fix a “Problem with MergeList” error when trying to do an update?

Recently installed Ubuntu 12.04.1, 64bit on Intel Quad core system. There is a Red Circle with a WHITE 'minus' sign on the upper right hand corner. In the end of a long message displayed below the RED CIRCLE in 'grey' says that INSTALLED PACKAGES HAVE UNMET DEPENDENCIES.

None of the following is working.

  1. Ubuntu Software Center not opening.

  2. UPDATE MANAGER

Could not initialize the package information

An unresolvable problem occurred while initializing the package information.

Please report this bug against the 'update-manager' package and include the following error message:

'E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/in.archive.ubuntu.com_ubuntu_dists_precise-updates_multiverse_binary-i386_Packages, E:The package lists or status file could not be parsed or opened.'


3. SYNAPTIC PACKAGE MANAGER

AN ERROR OCCURED The following details are provided

E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/in.archive.ubuntu.com_ubuntu_dists_precise-updates_multiverse_binary-i386_Packages E: The package lists or status file could not be parsed or opened. E: _cache->open() failed, please report.

Otherwise, the computer is working fine with broadband WiFi internet. InstallPLEASE HELP.

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marked as duplicate by Jorge Castro, devav2, John S Gruber, Ringtail, Mik Oct 14 '12 at 16:12

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

2 Answers

Best recommended answer , If I were you , I would just reinstall the UBUNTU ( WHich I HAD BEFORE ) . But You can try these codes in terminal ( CTRL + ALT + T )

1.sudo apt-get update
2.sudo apt-get upgrade
3.sudo -r

Maybe everything will be fine after that

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First two commands did not rectify. I am new to Ubuntu. The last command asks this: ashoke@ashoke-desktop:~$ sudo -r sudo: option requires an argument -- 'r' usage: sudo [-D level] -h | -K | -k | -V –  Ashoke Oct 14 '12 at 15:27
    
I reinstalled Ubuntu 12.04 from disk two times already. After installing some software like Stellarium, Google Earth, Clementine, Audacity etc. Nothing happened. Then after installing Minitube perhaps this took place. Anyway, can you please suggest me how to format my HDD with Ubuntu on it and then install afresh Ubuntu on a clean HDD. That is, not installing Ubuntu over it by accepting that all files etc would get deleted. Thanks for your suggestion. –  Ashoke Oct 14 '12 at 15:38
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it will be work

sudo apt-get remove synaptic software-center
sudo apt-get update 
sudo apt-get install synaptic software-center
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You have an extra space in the first command, it won't work. –  Tom Brossman Oct 14 '12 at 11:28
    
Sorry Friends, the above did not work for me. To make a long story short, I paste below the last few lines displayed on terminal. –  Ashoke Oct 14 '12 at 15:22
    
E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/ppa.launchpad.net_nilarimogard_webupd8_ubuntu_dists_precise_m‌​ain_binary-i386_Packages E: The package lists or status file could not be parsed or opened. ashoke@ashoke-desktop:~$ sudo apt-get install synaptic software-center Reading package lists... Error! E: Encountered a section with no Package: header E: Problem with MergeList /var/lib/apt/lists/ppa.launchpad.net_nilarimogard_webupd8_ubuntu_dists_precise_m‌​ain_binary-i386_Packages E: The package lists or status file could not be parsed .... –  Ashoke Oct 14 '12 at 15:23
    
no there isnt . @TomBrossman –  user84277 Oct 15 '12 at 13:15
    
Looking at the revision history it's quite clear there was, but @penreturn corrected it for you. –  Tom Brossman Oct 15 '12 at 13:19
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