http://bugs.winehq.org/show_bug.cgi?id=18171
--- Comment #11 from Ken Sharp kennybobs@o2.co.uk 2013-07-13 10:50:13 CDT --- This appears to be back in Wine 1.6-rc5 but if you keep hitting "Next" when the installer seems to have failed it will eventually move on.
Went back to 1.5.14 to confirm that it continues much easier in that version.
Looks like a different problem.