Comment 21 for bug 153980

Loomy Wrote:
Does the solution mentioned in the below bug fix this for you two guys
with the "" error?

https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/149379

"Just change your repository to Main in Synaptic, instead of using
da.archive.ubuntu.com/ubuntu"
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no this doesn't help me. I am going to attempt to download the alternate install CD and follow the directions at the bottom of this page: http://www.ubuntu.com/getubuntu/upgrading as a workaround, I will post results.