Has the false error message 'lost session data' when editing with preferences->show preview on first edit been fixed ?
Is it bug 6477 ? http://bugzilla.wikimedia.org/buglist.cgi?bug_id=6477
Is there a quick workaround - disable the error message for example ?
Thanks
Peter
Great, I've got this narrowed down and will have it fixed shortly. Thanks for the report!
-- brion vibber (brion @ pobox.com)