Comment 3 for bug 955673

The issue is that currently in 12.04 the CouchDB packages are now not installed by default, and a migrated system that wants to keep using Evolution needs the user to manually install the evolution-couchdb package (which installs all the other CouchDB components) - this fixes the issue after a reboot.

It is going to be a big ask to get an ordinary user to jump through this many hoops just to keep the e-mail package they have been using previously.

The evolution-couchdb package really need to be made a dependency of the basic Evolution install to provide compatibility with upgrades from 10.04 LTS for the many of us that will continue to use Evolution.