I am using texlive/scrbook for a large book. Using chapterthumb as shown in the koma-script book 3rd edition in Appendix B
\documentclass{scrbook}
\usepackage[ngerman]{babel}
\usepackage{chapterthumb}
\pagestyle{scrheadings}
\lohead[\putchapterthumb]{\putchapterthumb}
\addtokomafont{chapterthumb}{\bfseries}
\begin{document}
\chapter{test1}
test1
\chapter{test2}
\end{document}
gives the following errors:
! Undefined control sequence.
<argument> \undefinedpagestyle
l.10 \pagestyle{scrheadings}
! Undefined control sequence.
l.11 \lohead
[\putchapterthumb]{\putchapterthumb}
! LaTeX Error: Missing \begin{document}.
Do you know what is wrong? What did I miss that changed from koma-script version 3.00 to 3.38 of the current version in texlive? The fact that the chapterthumb.sty was in the doc tree is a minor issue.