I've got some information for you, which you might find interesting:
1.) It doesn't need a 400k disk to run. I've got it on an 800k disk for my Mac Classic. I took an HD disk and put tape over the hole.

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I did not know that. Did the disk have to be formatted to 400k?

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I have a confession to make.... :'( I tried this out last night and it crashed. The program can be on the hard drive, but for some reason , there must be a MFS disk in the drive, because it accesses it for apparently no reason.

Probably what I had gotten awhile ago was a cracked copy. I don't know if I have it any more, but I'll look. In any case, I'll see about what changes are needed to get rid of this restriction.