Hi, I'm trying to use `create-embedding-executable' (DrRacket 5.0, WinXP and Vista), with this little module: #lang racket/gui (define f (new frame% [label "Test"])) (send f show #t) But I don't know exactly how to set the arguments to produce the same result as "raco exe --gui", which works fine. Going through the collections I found little help. The best I could do is this: (create-embedding-executable "test.exe" #:modules '((#f "test.rkt")) #:configure-via-first-module? #t #:literal-expression (parameterize ([current-namespace (make-base-namespace)]) (compile `(namespace-require ''test))) #:gracket? #t #:collects-path (current-library-collection-paths) #:verbose? #t ) which effectively creates test.exe, but running the latter fails on: link: namespace mismatch; reference (phase 0) to a module "M:\Program Files\Rack et\collects\errortrace\errortrace-key.rkt" that is not available (phase level 0) ; reference appears in module: 'test in: init-test-coverage === context === test: [running body] loop I have absolutely no clue of what is going on here. Can someone help me with this? Thanks, Laurent