ok, i installed the correct version ('020 with fpu) but it now gives that old error:
"Abort trap"
ISTR with lha (I think) that you can tell it where to buffer the files it's unarchiving rather than it defaulting to RAM. Perhaps you can do the same with one of the unrar utilities to avoid running out of memory? Alternatively, could you use UAE to decompress the file?
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moto