http://bugs.winehq.org/show_bug.cgi?id=18432
--- Comment #1 from Julian Lam julian.lam@gmail.com 2009-05-11 18:36:59 --- Actually, one point to note, in order to mount the ISO to the file system, I used Gmount-iso. For previous installations, I had simply used the mount command. I figured there would be no difference since Gmount-iso is a frontend to mount.
In any case, the installer fails regardless.