the last file release is really outdated! if you are interested in the project i strongly recommend you to use the public CVS access.
i am currently in the process of switching from SISC/scheme to ABCL/CommonLisp. i am just to used to work in common lisp so that working in scheme is really a pain. luckily i found a really cool common lisp implementation in java: ABCL.
the next release of the project will be soon. i am currently doing the final cleaning work and polishing of details. the next release will be considered beta, because the classes and interfaces are stabilizing.