http://bugs.winehq.org/show_bug.cgi?id=17075
--- Comment #5 from Nikolay Sivov bunglehead@gmail.com 2010-02-05 04:41:24 --- (In reply to comment #4)
Zdenek, what installing IE6 have something to do with the error in PL/SQL Developer?
It installs native shdocvw at least. That confirms it's something to do with related modules.