[OS X TeX] Problem with scrartcl.cls with MacTeX 2016

[Alain Matthes]

Hi

After the install of MacTex 2016 I get the next problem

	\documentclass[]{scrartcl}
	\begin{document}

	\end{document}

The lualatex engine gives

Document Class: scrartcl 2016/05/10 v3.20 KOMA-Script document class (article)

Latex Error: ./circles1.tex:2 Missing number, treated as zero.

Latex Error: ./circles1.tex:2 Illegal unit of measure (pt inserted).

Latex Error: ./circles1.tex:2 Missing number, treated as zero.

Latex Error: ./circles1.tex:2 Illegal unit of measure (pt inserted).

The compilation is fine with pdflatex

The errors come  from … ??

Best regards,
Alain Matthes