http://bugs.winehq.org/show_bug.cgi?id=20380
--- Comment #48 from Roderick Colenbrander thunderbird2k@gmail.com 2009-12-13 11:38:20 --- Created an attachment (id=25194) --> (http://bugs.winehq.org/attachment.cgi?id=25194) Updated hack with some more debug info
Try this patch. It adds an ERR line which prints the pointers.