[racket] Cross-compilation

I'm using Racket 5.1.1. on win 7. I created an executable of type "distribution" and base "gracket". A zip file is created.

It runs fine on my machine. I have had a report that it doesn;t run on Win XP, and when it was tried on Win Vista, the user obtained an error  'can't load dll libracket3m_8aa6ug.dll'.

What gives? Does that mean that a compiled executable can only be run on the platform for which it was compiled?
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