piper, thank you for your advice!
At first, I installed wine-unstable:i386. After all, it is version 1.5.30
while on the other hand, wine:i386 is only 1.4.1.
Everything ok, exept from winetricks. When I tried to install it, it said
it would uninstall wine-unstable:i386 and install wine-unstable. We don't want that!
Instead, I downloaded it (wget
http://winetricks.org/winetricks)
but it could not recognize my wineprefix. So, I uninstalled wine-unstable:i386 completely.
Then I tried with wine:i386 and it was installed fine. I had the same problem with the native installation of winetricks (it would uninstall wine:i386 and install wine) but the downloadable file works ok this time!
It recognizes the default wineprefix. So, it's working now. I will set this thread to [Solved].