The latest GnuPG has new abilities to work with disabled keys. Part

The latest GnuPG has new abilities to work with disabled keys.  Part
of this change will eventually involve moving the 'd' that indicates a
disabled key to a different part of the key listing.

To smooth this transition, as of version 1.2.2, GnuPG will start
giving the 'd' in both places (and will do this for a good long time).

Here is a patch so mutt will accept either the old or new syntax.