http://bugs.winehq.org/show_bug.cgi?id=31027
Jacek Caban jacek@codeweavers.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED CC| |jacek@codeweavers.com Resolution| |WONTFIX
--- Comment #1 from Jacek Caban jacek@codeweavers.com 2012-06-26 10:30:57 CDT --- You probably have 64-bit wineprefix (for which both 32-bit and 64-bit Gecko should be installed, thus there are two dialogs) or attempted to run an app that uses Gecko (so it will try again to install Gecko when the app is launched).
In any case, you should simply install Gecko (and Mono) the right way: http://wiki.winehq.org/Gecko