"Could not calculate the upgrade " 11:04 to 11:10

[Isaac Ullah]

Hi all.

  I know that this type of "Could not calculate the upgrade" error has been reported before, but I have tried all solutions I could find in the old bug reports and on the forums, but to no avail. I am trying to go from 11.04 to 11.10 (with the final intent of bringing my system up to 12.04), but continually receive that error message while trying to do-release-upgrade. I am following proper upgrade protocol (I've updated all packages, fixed broken dependencies, and cleaned up my file system). I tried the solution mentioned here (http://ubuntuforums.org/showthread.php?t=1859338), but that doesn't work. I also purged my PPA's using PPA-purge, but that doesn't seem to help either.

I'm attaching apt.log, and will attach main.log in a follow-up post.

Any help/ideas will be greatly appreciated!

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: update-manager 1:0.150.5.4
ProcVersionSignature: Ubuntu 2.6.38-15.66-generic 2.6.38.8
Uname: Linux 2.6.38-15-generic x86_64
Architecture: amd64
Date: Sun Sep 9 17:33:44 2012
GConfNonDefault:
 /apps/update-manager/check_new_release_ignore=oneiric
 /apps/update-manager/first_run=false
 /apps/update-manager/window_size=(600,599)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to natty on 2012-09-09 (0 days ago)
VarLogDistupgradeApttermlog:

VarLogDistupgradeHistorylog:

VarLogDistupgradeTermlog:

[Isaac Ullah (iiullah)]

Here is main.log?field.comment=Here is main.log

[Isaac Ullah (iiullah)]

Any suggestions? I've got a post up on askubuntu about this issue here: http://askubuntu.com/questions/186341/could-not-calculate-the-upgrade-11-04-to-11-10