Hello,

I just made a clean installation of org packages and contrib in order to
be able to convert latex equations in gnus. But I meet the following
problem that I am going to describe:

Generating a png image seems to work via M-x org-preview-latex-fragment

\begin{equation} ((A \to B) \to A) \to A \end{equation}

But with M-x org-mime-htmlize, the png image is not loaded. Why? Your help is welcome.