<!DOCTYPE html><html><body><div dir="auto">Dear all,<br><br>As reported first in <a href="https://github.com/leo-colisson/robust-externalize/issues/46">https://github.com/leo-colisson/robust-externalize/issues/46</a> and then in <a href="https://github.com/latex3/latex3/issues/1570,">https://github.com/latex3/latex3/issues/1570,</a> we realized that it is impossible to write files when the aux_dir starts with a dot. This regression is introduced in TeXLive 2024, and MWE can be found in the above reports.<br><br>Cheers,<br>Léo</div></body></html>