Software upgrade not working. APT error

[AliSajidImami]

Hi guys. I was trying to upgrade to 10.10 from 10.04, when i hit the following error.

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, Eroblem with MergeList /var/lib/apt/lists/mirror.letsopen.com_os_ubuntu_dists_natty_main_bin ary-i386_Packages, E:The package lists or status file could not be parsed or opened.'

Now no repository will load and i'm unable to user synaptic or apt or software center.

I googled and found out that running

sudo rm /var/lib/apt/lists/* -vrf

Will fix it, but that didn't work either. Any ideas?

[cortman]

Did you try running

sudo rm -r /var/lib/apt/*

without the -vrf? You then have to run

sudo apt-get update

If you get any errors from the second command, post them here.