http://bugs.winehq.org/show_bug.cgi?id=17697
--- Comment #19 from Dan Kegel dank@kegel.com 2010-02-02 11:41:32 --- We usually use things like WINEDEBUG=+relay,+atl and look at the log, possibly adding TRACE statements in the component of interest. You might consider adding a dummy implementation of AtlAxDialogBoxA and see if that gets called right before the crash.
You can also use winedebug, occasionally that's helpful.