Sorry but I don't know anything about PPC so I can't help you. I thought your problem was with actually getting the OS installed, rather than a problem with your software.
At a guess though, if the 68k binary works but the PPC one doesn't, then you should check your version of ppc.library and 680x0.library. Also, do any other PPC binaries work, or is it just this one?
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moto