[racket] Can't scribble BNF grammar to pdf

What error do you get when using pdflatex directly?

At Thu, 5 Sep 2013 20:16:45 -0400, Ismael Figueroa wrote:
> I tried to compile the example from
> http://docs.racket-lang.org/scribble/bnf.html
> but it seems that pdflatex gets stuck when trying to generate the pdf.
> 
> I tried to compile first to latex code, and then directly use pdflatex and
> I get the same situation.
> 
> I am unsure whether it is an scribble issue, or an issue with my latex
> setup. I attach a minimal example file. I can compile it without problems
> to HTML.
> 
> Thanks
> -- 
> Ismael