http://bugs.winehq.org/show_bug.cgi?id=22428
--- Comment #1 from Dan Kegel dank@kegel.com 2010-04-19 18:45:22 --- Created an attachment (id=27468) --> (http://bugs.winehq.org/attachment.cgi?id=27468) +relay,+file log of installing from dvd or disk (good) or iso (bad).
Just to be clear, the workaround is to copy the files to hard drive and install from there. (I had to mount with the unhide,uid=1000 options.)