This sounds like something has gone wrong in the pkg setup on your machine. What do you get when you do
raco pkg show -a Robby On Wed, May 21, 2014 at 7:56 AM, Éric Tanter <etan...@dcc.uchile.cl> wrote: > Well, I had tried that and the problem was, as I mentioned in my previous > message, that "nor is there an htdp section in the `choose language...' > dialog". > > Now I tried on another machine, and yes, there is such an htdp section. And > the stepper works as expected. > > But I don't remember having explicitly uninstalled htdp on my machine. And > also, yesterday I reinstalled (getting the latest .dmg) and the same happened. > - how come this disappeared? > - how can I get it back? > > Thanks, > > -- Éric > > > On May 20, 2014, at 10:42 AM, Robby Findler <ro...@eecs.northwestern.edu> > wrote: > >> I think the instructions in HtDP are wrong. You could choose "Choose >> Language" and then click on "Beginning Student Language" in the >> resulting dialog. >> >> Robby >> >> On Tue, May 20, 2014 at 9:24 AM, Éric Tanter <etan...@dcc.uchile.cl> wrote: >>> Hi, >>> >>> I'm having trouble using the base student languages from scratch (v6.0.1). >>> (strangely enough, it's the first time ever I'm really interested in >>> running these languages since the whole #lang story was introduced) >>> >>> 1. If I start DrRacket and try to follow the instructions online >>> http://www.ccs.neu.edu/home/matthias/HtDP2e/part_prologue.html >>> "Start DrRacket and choose “Beginning Student Language” from the “How to >>> Design Programs” submenu in the “Language” menu." >>> -> there is simply no such submenu in the language menu, nor is there an >>> htdp section in the "choose language..." dialog >>> >>> 2. If I put #lang htdp/bsl then I can use bsl and run it, but the stepper >>> does not work: >>> send: no such method >>> method name: stepper-button-callback >>> class name: ...ket/version/tool.rkt:176:9 >>> context...: >>> /Applications/Racket/collects/racket/private/class-internal.rkt:4387:0: >>> obj-error34 >>> /Applications/Racket/share/pkgs/htdp-lib/stepper/drracket-button.rkt:11:3 >>> /Applications/Racket/collects/racket/private/more-scheme.rkt:147:2: >>> call-with-break-parameterization >>> /Applications/Racket/collects/racket/private/more-scheme.rkt:264:2: >>> call-with-exception-handler >>> >>> /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/cocoa/window.rkt:751:4: >>> dispatch-on-event method in window% >>> >>> /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:451:6 >>> >>> /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:502:32 >>> >>> /Applications/Racket/share/pkgs/gui-lib/mred/private/wx/common/queue.rkt:650:3 >>> >>> Clearly, I must be doing something wrong, because those things should work >>> right out of the box I assume! >>> >>> (I tried running raco setup, that didn't fix the issues) >>> >>> Thanks, >>> >>> -- Éric >>> >>> >>> >>> ____________________ >>> Racket Users list: >>> http://lists.racket-lang.org/users >> > ____________________ Racket Users list: http://lists.racket-lang.org/users
