Dear List,

Something happened with today's update.

Any of the -dev engines fail to compile the attached .dtx file if the
“dox” package is loaded, but I am not sure the failure is caused by
this package.

(pdf|xe|lua)latex-dev engines seem to bump into \@doc@describe which
is defined in doc-v3beta.sty.

Thank you for your help.

Best,

Robert