problem with \ProcessKeyOptions

David Carlisle d.p.carlisle at
Wed Jul 6 09:52:25 CEST 2022

> “This is pdfTeX, Version 3.141592653-2.6-1.40.24 (TeX Live 2022)
(preloaded format=pdflatex 2022.7.4)  6 JUL 2022 09:32”

That is the version of pdftex which is not relevant  here. Check you are
using the June LaTeX release, ie the terminal and log show:

LaTeX2e <2022-06-01> patch level 4
L3 programming layer <2022-06-16>

(or patch level 5 which went to ctan yesterday)

Also note the change in command name: \ProcessKeysOptions. in the package,
the new code in the format has no s: \ProcessKeyOptions.

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