Missing (TFM) files since MiKTeX update

Question

I use the Cochineal font for both text and math using the packages cochineal and newtxmath with the option cochineal. I use MiKTeX 2.9 on Windows 10. Everything worked perfectly fine until maybe a week ago, when I updated packages, many named miktex-.... Since these updates, when I compile any document that uses the package newtxmath with the option cochineal, I keep getting errors like

Font \csname\endcsname=cochMI at 10.95pt not loadable: Metric (TFM) file not found.

The .pdf file is still produced in the end, but all math characters based on letters or numbers are missing.

I was totally lost at first, so I just tried to uninstall both Cochineal and newtx and to reinstall them using the MiKTeX console. Actually I even tried to uninstall and reinstall the whole MiKTeX distribution from my computer.

After lots of research, I tried to verify if Cochineal and newtx were correctly installed (although I'm still not certain that I understand correctly the installation of fonts, it seems kinda complicated). I thought maybe the .tfm files from Cochineal or newtx had been lost or something, but I was able to find them in the TEXMF root directories; all of the .tfm files from Cochineal are under fonts\tfm\public\cochineal and all of those from newtx are under fonts\tfm\public\newtx. I also verified that the .map files were saved in the right folders; I have Cochineal.map under fonts\map\dvips\cochineal and both newtx.map and zmn.map under fonts\map\dvips\newtx. I also did run the updmap command in the prompt after installing both fonts.

Here's an example of a small document which produces the error.

\documentclass[11pt,letterpaper]{article}

\usepackage[french]{babel}
\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{cochineal}
\usepackage[cochineal]{newtxmath}

\begin{document}

\( Test \)

\end{document}

Maybe it's something quite obvious, but I'm really lost. How to get LaTeX to find the .tfm files?

Answer 1

I contacted the author of the package, and it was indeed a problem with the version available on CTAN. He sent an update of the Cochineal package, and now everything works fine!