Welcome heisme

I encountered the same problem as well.

You'll need to uninstall, delete the Sega folder, reinstall and patch directly to 1.2. (some people experience trouble when they patch to 1.1 first before going to 1.2.).

There's also a thread about this problemright here. If all of this doesn't help, feel free to open a new thread in the apothecary (forum for troubleshooting and technical issues) which is right here.