... has anyone seen this error message from stepping thru macros: [:~/svn/2HtDP] matthias% sequence-contract-violation: negative: method set-max-width cannot be called, except in states (unlocked write-lock), args 834 context...: /Users/matthias/plt/racket/collects/racket/private/more-scheme.rkt:148:2: call-with-break-parameterization /Users/matthias/plt/racket/share/pkgs/gui-lib/mred/private/lock.rkt:43:38 /Users/matthias/plt/racket/collects/racket/private/more-scheme.rkt:265:2: call-with-exception-handler /Users/matthias/plt/racket/share/pkgs/gui-lib/mred/private/wxme/text.rkt:766:2: end-edit-sequence method in text% /Users/matthias/plt/racket/share/pkgs/macro-debugger/macro-debugger/view/stepper.rkt:438:4: update* method in macro-stepper-widget% /Users/matthias/plt/racket/share/pkgs/macro-debugger/macro-debugger/view/stepper.rkt:400:31 .../more-scheme.rkt:261:28 /Users/matthias/plt/racket/share/pkgs/macro-debugger/macro-debugger/view/stepper.rkt:369:24
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