Thanks! No special setting, CPU 68040 NO MMU works great, I've used 68030 NO MMU & 68060 NO MMU some less and they worked well, look at some of my first 32se install videos, I'm going through FS-UAE settings, let me know how it goes..
Are you having something running that blocks the script from doing it's job ? if you get a error during theme change then there is something running that prevents it. are you getting error on real Amiga or emulator? you can set in global settings always reboot and try change theme