# memoir + thumbs: no trim marks

When combining the memoir class and the thumbs package, the trim marks (i.e. crop marks) are no longer displayed.
updated MWE:

\documentclass[showtrims,a4paper]{memoir}
\usepackage{blindtext}
\usepackage{xcolor}

%%%%%%%%%%%%%
\setpagecc{240mm}{167mm}{*}
\setlrmarginsandblock{10mm}{15mm}{*}
\setulmarginsandblock{22mm}{10mm}{*}
\setmarginnotes{0mm}{0mm}{0mm}
%%%%%%%%%%%%%
\checkandfixthelayout
%%%%%%%%%%%%%
%edge index
\usepackage{thumbs}
%%%%%%%%%%%%%

\begin{document}
\mainmatter
\chapter{This is a chapter title}
\Blindtext
\end{document}


After applying pdflatex, the PDF looks like this:

I would greatly appreciate your help!

• When I pdflatex your MWE the trim marks are displayed but no thumb marks. I also tried changing the class from memoir to book (commenting out memoir specific code) but no thumb marks were displayed. I assumed that you wanted bot trim and thumb marks. Please provide an MWE that shows your problem. – Peter Wilson Oct 31 '20 at 18:54
• The use of memoir is essential for the document I want to typeset. The example code was is that regard minimal, that loading the package thumbssuffices to disable the crop marks. I added the code, that actually inserts the chapter edge index and provided the PDF result I get after pdflatex. If I remove \usepackage{thumbs} (and \addthumb{}{\thechapter}{black}{black!10}) the crop marks are visible. – Grohana Nov 2 '20 at 8:49
• As Peter I don't get the images you post using TeXLive 2020. – daleif Nov 2 '20 at 8:58
• Good point. I don't run TeXLive, but I updated my MiKTeX distribution and that did the trick! Thank you both! – Grohana Nov 3 '20 at 16:49

As it turned out, my local version of the memoir package (and maybe of some dependent packages) wasn't up to date. Running updates in the MiKTeX console fixed it.