[plt-scheme] PLT SCHEME 4.0 - SLLGEN

I would like to know how to use the sllgen in the version 4.0 of PLT Scheme,
because i'm compilling my old programs (v.372)
and they throws the error "sllgen:make-define-datatypes: bad scanner
specification in: the-lexical-spec". I think it is because
the sllgen:make... functions have changed but i didn't found the new
specification on internet, Thanks for read the mail.

-- 
Luis Fernando Pino Duque
Estudiante Ingeniería de Sistemas
Universidad del Valle
Cali - Colombia
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