Ubuntu
update-manager package

Unable to upgrade to 11.04 from 10.10

Asked by Cicero Silva

I've tried to upgrade to 11.04 from 10.10 but after it downloads and completes the Setting new software channels step i get the following message

Invalid package information

After your package information was updated the essential package 'ubuntu-minimal' can not be found anymore.
This indicates a serious error, please report this bug against the 'update-manager' package and include the files in /var/log/dist-upgrade/ in the bug report.

After this it goes back to the original state.

How do i include the files in /var/log/dist-upgrade/?

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Follow_Me (mails-valentin) said : 		#1

try to
sudo aptitude -f install
(if "command not found" - sudo apt-get install aptitude)
reboot
try again

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Lynne Stevens (jackie40d) said : 		#2

I did the above and got another error when trying to Upgrade from 10.10 to 11.04
W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/natty/main/source/Sources.gz 404 Not Found
, W:Failed to fetch http://extras.ubuntu.com/ubuntu/dists/natty/main/binary-i386/Packages.gz 404 Not Found
, E:Some index files failed to download, they have been ignored, or old ones used instead.

Some one remove a few directories ?
It went through the downloading 2 files then went through setting up channels and then when starting to download
the above is what comes up Says files are not where they shpuld be I would guess . . I even added the 11.04 CD in the drive and still got the same stuff plus let it be added to the software center

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