This bug was filed from the Socorro interface and is report bp-f703416c-cd6c-4665-ba73-71d0c2141220. ============================================================= Thunderbird Daily on OS X 10.10 unusable sind 2014-12-16 because of a startup crash.
Sorry, I clicked the submit button too early. The description should read: Thunderbird Daily on OS X 10.10 is unusable since 2014-12-16 because of a startup crash.
Should be fixed in the next nightlies