I have a simple TeX document test.tex \documentclass[12pt,a4paper]{memoir} \begin{document} This is a test \end{document} If I run pdflatex test.tex in Fedora 37, it works fine: This is pdfTeX, Version 3.141592653-2.6-1.40.22 (TeX Live 2021) (preloaded format=pdflatex) restricted \write18 enabled. entering extended mode (./test.tex LaTeX2e <2020-10-01> patch level 4 L3 programming layer <2021-05-07> (/usr/share/texlive/texmf-dist/tex/latex/memoir/memoir.cls Document Class: memoir 2021/03/23 v3.7o configurable book, report, article docu ment class (/usr/share/texlive/texmf-dist/tex/generic/iftex/iftex.sty) (/usr/share/texlive/texmf-dist/tex/latex/memoir/mem12.clo) (/usr/share/texlive/texmf-dist/tex/latex/tools/array.sty) (/usr/share/texlive/texmf-dist/tex/latex/tools/dcolumn.sty) (/usr/share/texlive/texmf-dist/tex/latex/tools/delarray.sty) (/usr/share/texlive/texmf-dist/tex/latex/tools/tabularx.sty) (/usr/share/texlive/texmf-dist/tex/latex/textcase/textcase.sty)) (/usr/share/texlive/texmf-dist/tex/latex/l3backend/l3backend-pdftex.def) (./test.aux) [1{/usr/share/texlive/texmf-var/fonts/map/pdftex/updmap/pdftex.map }] (./test.aux) )</usr/share/texlive/texmf-dist/fonts/type1/public/amsfonts/cm/ cmr12.pfb> Output written on test.pdf (1 page, 9544 bytes). Transcript written on test.log. But, if I run the same command if Fedora 38-beta, I get the following error This is pdfTeX, Version 3.141592653-2.6-1.40.24 (TeX Live 2022) (preloaded format=pdflatex) restricted \write18 enabled. entering extended mode (./test.tex LaTeX2e <2022-06-01> patch level 5 L3 programming layer <2022-12-17> ! Use of @tempa doesn’t match its definition. u ndefined l.2 ? Any help is appreciated. Thank you very much _______________________________________________ test mailing list -- test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to test-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/test@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue