I recently upgraded my Mozilla Thunderbird 2 to 3, and in the process was asked to upgrade my Lightning calendar add-on from version 0.9 to 1.0b1. I've done this, and in the "add on" section of Thunderbird it says I need to restart Thunderbird for the Lightning installation/ upgrade to complete.
Whenever I do this, Thunderbird restarts, but there's no sign of lightning and the "restart" prompt is there again....any ideas how to get Lightning to work with Thunderbird 3?