Wrong option passed to the geometry package

[dbitouze]

Consider the following MCE (test.tex):

\documentclass{article}
\usepackage{blindtext}
\begin{document}
\Blinddocument
\end{document}

the compilation of which resulting in a 16 pages PDF (joined) file.

With the current (3.10) version of pdfjam, running:

pdfjam --nup 2x2 --landscape test.pdf

fails with the error:

pdfjam ERROR: Run 1: Output file not written

A glance at the .tex temporary file used by pdfjam reveals that the problem comes from the option given to the geometry package:

\usepackage[papersize={A4A4,A4A4}]{geometry}

test.pdf