http://bugs.winehq.org/show_bug.cgi?id=31098
--- Comment #5 from Nikolay Sivov bunglehead@gmail.com 2012-07-03 04:15:47 CDT --- --- Could not load wine-gecko. HTML rendering will be disabled. err:mshtml:HTMLDocument_Create Failed to init Gecko, returning CLASS_E_CLASSNOTAVAILABLE ---
You need to install wine-gecko package, it's described here http://wiki.winehq.org/Gecko/.