[plt-scheme] MzScheme 203.10 install problem

I'm trying to install the latest exp-tagged version
(203.10) of mzscheme. When performing the "make
install" step and compiling .zos I get the following
error:

setup-plt: Error during Compiling .zos for srfi
(/var/tmp/portage/mzscheme-203.10/image/usr/collects/srfi)
setup-plt:   31.ss:2:0: module: provided identifier
not defined or imported at: rec in:
(#%plain-module-begin (require-for-syntax mzscheme)
(provide rec))
make[1]: *** [copy-finish] Error 1
make[1]: Leaving directory
`/var/tmp/portage/mzscheme-203.10/work/plt/src'
make: *** [install] Error 2

The module in 31.ss does look a bit suspicious since
it provides an identifier that has not been defined.

Regards,

Ulf

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