[plt-scheme] Using srfi-19 with PLT-Scheme

Hi all,

I'm trying to use srfi 19 and the following simple test results in
error shown below:

(module test
  mzscheme

  (require
   (lib "19.ss" "srfi")

   (printf "DATE~n")))

> (require "test.ss")
test.ss:4:2: module: identifier already imported (from a different source) at: make-date in: (require (lib "19.ss" "srfi") (printf "DATE~n"))

I'm assuming that I'm getting a conflict with the mzscheme date struct?

Is there a work around?

Many thanks!
David