[racket-dev] GUI executables created with DrRacket fail

The animation program I sent out a bit ago, and attached here, runs fine
under DrRacket but when I create an executable (using either raco or
DrRacket) and try to run it, it fails with the following:

collection-file-path: collection not found
  collection: "scribble"
  in collection directories:
  context...:
   c:\program files\racket\collects\racket\private\pre-base.rkt:115:58: fail
   define-on-demand-bound-promise
   c:\program files\racket\collects\racket\private\promise.rkt:104:10
   c:\program files\racket\collects\racket\private\more-scheme.rkt:264:2:
call-w
ith-exception-handler
   c:\program files\racket\collects\racket\private\promise.rkt:96:0:
force/gener
ic
   define-on-demand-bound-promise
   c:\program files\racket\collects\racket\private\promise.rkt:104:10
   c:\program files\racket\collects\racket\private\more-scheme.rkt:264:2:
call-w
ith-exception-handler
   c:\program files\racket\collects\racket\private\promise.rkt:96:0:
force/gener
ic
   #%embedded:g4484:manual-scheme: [running body]
   #%embedded:g3956:manual: [traversing imports]
   #%embedded:g3927:defthing: [traversing imports]
   #%embedded:g3903:parameters: [traversing imports]
   #%embedded:g3891:parameters: [traversing imports]
   #%embedded:g3874:no-gui: [traversing imports]
   #%embedded:g3848:main: [traversing imports]...

This happens under 5.92 and 5.93.

Any ideas?
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