Scheme 48 development?

Greetings,

Um... this may be a dumb question, but... is Scheme 48 still under 
active development?

I am asking because the latest stable version (1.8) is almost three 
years old.  So I went to the development page and tried the links listed 
there:

http://www.deinprogramm.de/cgi-bin/hgs48-stable.cgi
http://www.deinprogramm.de/cgi-bin/hgs48.cgi

...both of which produce a 404.

Scheme 48 seems like a cool beast.  Please tell me that these links are 
out of date and that there is a thriving community somewhere working on 
a repository that is actively maintained...

-- 
Hans Nowak