Error 8000 0003 is an odd address error (e.g. 8001). All addresses should be even (e.g. 8000) on the 68000 CPU. Later CPU's can cope with odd addresses.
I will download WIP11 and update the Level Editor
I tried WIP11 on WinUAE with my A600 setup (Workbench 2.05) and it gives the 8000 0003 error on bootup. When I switched the CPU to 68010 it worked fine. Since this is the first version with music, perhaps the music data starts at an odd address? *shrugs*