Matlisp and ACLv6

Hello,

some years ago I downloaded Matlisp-1.0b, which ran fine on ACLv501.  With
ACLv6, I always had the following error:

;   Loading d:\Common Lisp\matlisp1.0b\ACL6\matlisp-1.0b\config.lisp
;   Loading d:\Common Lisp\matlisp1.0b\ACL6\matlisp-1.0b\system.dcl
Error: No translation rule for #p"matlisp:;code;packages.fasl"
  [condition type: SIMPLE-ERROR]

ACLv501 cannot fins translation rule for #p"matlisp:;code;packages.fasl"
either, so it may be best to ask someone with more matlisp knowledge than I
have.  I have looked and found Matlisp-1.0b to be the newest version, so I
don't think a new download will do the trick.
Who knows why I get this problem and what I should do about it?

Kind regards,

Ernst van Waning