[plt-scheme] Meroon and MzScheme

I'm trying to use the Meroon OO system and I have the following set up so
far:

(require (lib "defmacro.ss"))

(load "meroon.mzscheme")
(load "macros.scm")

Inside Meroon.mzscheme *meroon-features* is defined, and then in
macros.scmit is referenced. However, when I go to run it I get the
following error:
macros.scm::1273: reference to undefined identifier: *meroon-features*

I've tried with another variable defined in meroon.mzscheme --> (define
*test* 0), reference it in macros.scm, and the same error. I tried using the
Bigloo and Guile implementations and both work fine without any errors. I've
done this both in DrScheme and from the CL in mzscheme. I'm running Mzscheme
360 and I do know the meroon system seems to be a bit dated. Any help would
be appreciated.
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