Version 2.6 of array.sty released along with LaTeX2e <2024-06-01> is not compatible with arydshln's assumption of internal behavior of array. Stick to a compatible version of array by adding \RequirePackage{array} with a rollback option. Use of date as in [=2024-05-01] makes the LaTeX code compatible with earlier installation of TeX Live, where the latex engine can pick a suitable version available. Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx> --- I have tried to contact arydshln package maintainer, but failed to get any response so far. --- perfbook-lt.tex | 3 +++ 1 file changed, 3 insertions(+) diff --git a/perfbook-lt.tex b/perfbook-lt.tex index fd598a56..ad4463be 100644 --- a/perfbook-lt.tex +++ b/perfbook-lt.tex @@ -9,6 +9,9 @@ % within a page. See: https://tex.stackexchange.com/questions/183149/ \ifdefined\pdfsuppresswarningpagegroup \pdfsuppresswarningpagegroup=1 \fi +% Work around conflict between arydshln and array since array v2.6c +\RequirePackage{array}[=2024-05-01] % One month before the release date of v2.6c + % standard packages % A more pleasant font -- 2.34.1