The way you look for the path of catalog.dtd doesn't work in ASDF 3.
Here is a supported way that works with all versions of ASDF 2 and later.
I'll try to improve backward compatibility, but you may nonetheless
want to apply the patch.
Also, I believe that three years afterwards, and
with each and every implementation providing ASDF 2,
it is safe to remove the #-asdf2 code around your codebase.
—♯ƒ • François-René ÐVB Rideau •Reflection&Cybernethics• http://fare.tunes.org
Work harder! Millions on welfare depend on you.