Comment 7 for bug 1229221

There was an unclear situation that may no longer be relevant where, if you had wine1.6 installed, apt-get install wine1.7 would fail in this way but "apt-get install wine1.7 wine1.7-i386" would work, even though wine1.7 directly depends on wine1.7-i386.

However, I have a suspicion that you no longer have the actual PPA on your system and still have stale packages, such as can occur when upgrading from one Ubuntu release to the next. Please retry: sudo add-apt-repository ppa:ubuntu-wine/ppa