[racket-dev] strange error

From: Matthias Felleisen (matthias at ccs.neu.edu)
Date: Sun Jun 19 17:32:30 EDT 2011

> Welcome to DrRacket, version [3m].
> Language: racket.
> compile: access from an uncertified context to unexported variable from module: "/Users/matthias/plt/collects/racket/private/define-struct.rkt" in: make-self-ctor-checked-struct-info
> > 

I don't know yet how to create it in a few lines. Any hints? 

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