The installer is still not running, but I managed to find a workaround. I installed magic workstation under Windows, copied the program folder from window's "Program Files" to wine's "Program Files". Then, I used regedit on windows to export the registry entries on "HKCU/Software/Magic Workstation", and then imported the entries using wine's regedit. Now, the program appear to run just fine. I even had some online plays, and haven't seen any kind of problem yet. However, even if my main problem (running the app under wine) is solved, the question about the installer error is still unsolved. And, if this problem is indeed new, it may (or may not) be some useful information for wine users and developers know that it exists.
