I tried to install the latest beta version of thunderbird 16 via the official ppa - with the same result as seen above.
I disabled the ppa and am now back on the official thunderbird 15 build of quantal.
I tried to install the latest beta version of thunderbird 16 via the official ppa - with the same result as seen above.
I disabled the ppa and am now back on the official thunderbird 15 build of quantal.