which is wrong as the function make-obsolete-overload does only take two
arguments and no third `when' arg.

Simply reverting this change fixed semantic for me.

cheers
sascha
-- 
Sascha Wilde
    "Computers are good at following instructions,
     but not at reading your mind."
    D. E. Knuth, The TeXbook, Addison-Wesley 1984, 1986, 1996, p. 9