! Illegal unit of measure (pt inserted). — While using the XeLaTeX

[maxiride]

I had no troubles using this package with pdfLaTeX for a long time, however, while making a document which needed the use of XeLaTex (custom fonts requirements) I encountered in the error:

! Illegal unit of measure (pt inserted).
<to be read again> 
                   p
l.9 \mysignature[right]{full}
                             
? 

Here is a minimal working example (remember to use XeLaTex):

\documentclass{article}
\usepackage[signature=my_signature, empty, nojob]{mysignature}

\begin{document}

\mysignature[right]{full}

\end{document}

The only place where a pt measure is used is here. I've tried to change the dimension to something else (and the thickness changed accordingly) and even commenting out the whole line (as expected no rule was drawn) but without success, the error was always thrown.

[AKuederle]

Strange... But I think the issue is exactly the opposite. The unit using pt is not the problem, but some other value is.
I might have time to look into this on the weekend.

Thank you for raising this issue!

[maxiride]

Don't want to rush things, but did this weekend eventually come? =)

I did my own research and apparently XeLaTeX doesn't understand pt!

Here is the detailed explanation from a more experienced user: https://translate.google.com/translate?sl=it&tl=en&u=https://www.guitex.org/home/en/forum/5-tex-e-latex/116475-xelatex--illegal-unit-of-measure-pt-inserted

[AKuederle]

Oooh... I guess I had a really long week ;) Thank you for doing your own research on that. I checked and I am using the pt unit only once in the script. I changed to a value in mm that should be roughly equivalent. Could you check again and let me know, if it works with XeLatex now?

[maxiride]

Still having the same issue, I eventually changed over to LuaLatex.