Upgrade fails from 10.04 to 10.10

[ClareM]

Binary package hint: update-manager

When trying to upgrade from Ubuntu 10.04 LTS to 10.10, all goes well until the manager starts "calculating the changes" when I receive this error:

Could not calculate the upgrade

An unresolvable problem occurred while calculating the upgrade:
E:Unable to correct problems, you have held broken packages.

 This can be caused by:
 * Upgrading to a pre-release version of Ubuntu
 * Running the current pre-release version of Ubuntu
 * Unofficial software packages not provided by Ubuntu

If none of this applies, then please report this bug against the 'update-manager' package and include the files in /var/log/dist-upgrade/ in the bug report.

I have made sure all packages are up to date and Synaptic does not indicate that any packages are broken.

[dazza5000 (darran-kelinske)]

Thank you for reporting this.

Possibly related to this:

http://ubuntuforums.org/showthread.php?t=1594933

Looks like you are not the only one.

Marking as duplicate of 606652.

Darran