I keep trying to upgrade to 14.04 from 13.10, but it comes up with the same error no matter what I disable. I spoke to a friend who is quite handy with Ubuntu and he said it might be an issue with the wheezy package. I keep removing it from the other software section of settings where the ppa's are. I then go to upgrade and there is an error message saying;
Could not determine the upgrade
An unresolvable problem occurred while calculating the upgrade.
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 using the command '
ubuntu-bug ubuntu-release-upgrader-core' in a terminal.
I then go into Settings -> Software & Updates -> Other software and wheezy is back in there.
I also had the same thing happen when I was using terminal to upgrade via the command: