[racket] Unable to use Step in Dr. Racket

I can't duplicate the problem with 5.1.3. Which exact installer did
you use, because I dont see an x86 64bit installer for ubuntu? I used
racket-5.1.3-bin-i386-linux-ubuntu-jaunty.sh



On Thu, Sep 15, 2011 at 2:50 AM, Anirudh Sanjeev <skyronic at gmail.com> wrote:
> Hi,
>
> I am new to scheme. I am trying to run small programs from SICP on Dr. Racket.
>
> This is my code:
> (define (factorial n)
>  (if (= n 1) 1
>      (* n (factorial (- n 1)))))
>
> (factorial 5)
>
> It runs fine. When I click the "Step" Button, I get an error like this:
>
> sequence-contract-violation: negative: method insert cannot be called,
> except in states (unlocked), args ")" 408
>
>  === context ===
> /usr/local/lib/racket/collects/mred/private/snipfile.rkt:256:6: flush-text
> /usr/local/lib/racket/collects/mred/private/snipfile.rkt:279:9
> /usr/local/lib/racket/collects/mzlib/private/port.rkt:53:7
> /usr/local/lib/racket/collects/racket/pretty.rkt:978:7: pr
> /usr/local/lib/racket/collects/racket/pretty.rkt:1210:9: loop
> /usr/local/lib/racket/collects/racket/pretty.rkt:978:7: pr
> /usr/local/lib/racket/collects/racket/pretty.rkt:1210:9: loop
> /usr/local/lib/racket/collects/racket/pretty.rkt:978:7: pr
> /usr/local/lib/racket/collects/racket/pretty.rkt:1210:9: loop
> /usr/local/lib/racket/collects/racket/pretty.rkt:978:7: pr
> /usr/local/lib/racket/collects/racket/pretty.rkt:1210:9: loop
> /usr/local/lib/racket/collects/racket/pretty.rkt:978:7: pr
> /usr/local/lib/racket/collects/racket/pretty.rkt:1210:9: loop
> /usr/local/lib/racket/collects/racket/pretty.rkt:978:7: pr
> /usr/local/lib/racket/collects/racket/pretty.rkt:422:3: generic-write
> /usr/local/lib/racket/collects/racket/pretty.rkt:234:18
> ...
>
> Information:
> Dr. Racket 5.1.3 using the latest x86_64 installer on Ubuntu 11.04 64
> bit, with the "beginning student" language pack.
>
> I tried it on a Windows Machine and it works beautifully. Please let
> me know how I can re-install it to work properly on my linux machine.
>
> Thank you,
> Anirudh
>
> --
> http://skyronic.com
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