It will be a bit before I can look into this, but I guess that if you
throw away your prefs it will start up (or even just edit them and
throw out the language level setting). Or it may even start up on a
second try, depending on what is actually going wrong there.

Robby

On Tue, Jul 26, 2011 at 1:12 PM, Matthias Felleisen
<matth...@ccs.neu.edu> wrote:
>
> built from scratch this morning
>
> error messages:
>
> [1] 847
> [:~/Git/Ingenious] matthias% send: target is not an object: #f for method: 
> change-children
>
>  === context ===
> /Users/matthias/plt/collects/racket/private/class-internal.rkt:4601:0: 
> obj-error
> /Users/matthias/plt/collects/drracket/private/module-language-tools.rkt:39:6: 
> set-lang-toolbar-buttons method in ...e-language-tools.rkt:35:4
> /Users/matthias/plt/collects/drracket/private/module-language-tools.rkt:134:6:
>  move-to-new-language method in ...e-language-tools.rkt:93:4
> /Users/matthias/plt/collects/drracket/private/module-language-tools.rkt:235:6:
>  after-set-next-settings method in ...e-language-tools.rkt:93:4
> /Users/matthias/plt/collects/drracket/private/unit.rkt:628:10: 
> after-load-file method in ...ket/private/unit.rkt:525:8
> /Users/matthias/plt/collects/framework/private/text.rkt:298:4: 
> after-load-file method in ...ork/private/text.rkt:79:2
> /Users/matthias/plt/collects/framework/private/frame.rkt:1170:2
> /Users/matthias/plt/collects/racket/private/class-internal.rkt:3679:0: 
> continue-make-super
> /Users/matthias/plt/collects/racket/private/class-internal.rkt:3679:0: 
> continue-make-super
> /Users/matthias/plt/collects/racket/private/class-internal.rkt:3679:0: 
> continue-make-super
> /Users/matthias/plt/collects/framework/private/frame.rkt:621:2
> /Users/matthias/plt/collects/racket/private/class-internal.rkt:3679:0: 
> continue-make-super
> /Users/matthias/plt/collects/racket/private/class-internal.rkt:3679:0: 
> continue-make-super
> /Users/matthias/plt/collects/framework/private/frame.rkt:1729:2
> /Users/matthias/plt/collects/racket/private/class-internal.rkt:3679:0: 
> continue-make-super
> /Users/matthias/plt/collects/framework/private/frame.rkt:905:2
> ...
>
>
>
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