http://bugs.winehq.org/show_bug.cgi?id=19873
--- Comment #5 from Vitaliy Margolen vitaliy@kievinfo.com 2009-08-28 19:42:42 --- (In reply to comment #2)
I have a working installation of wine that I have not tweaked, but it cannot find wine_gecko, even though it's looking in the right place(!)
Wine_gecko was updated to 1.0.0. All new versions of Wine are now looking for it, not the 0.9.1. I think this is your problem.