classicthesis is incompatible with ams documentclasses

[Former user]

MNWE
\documentclass{amsbook}
\usepackage{classicthesis}
\begin{document}
\chapter{test}
\end{document}

What steps will reproduce the problem?
1. Compile the MNWE
2.
3.

What is the expected output? What do you see instead?

Chapter 1
! Missing } inserted.
<inserted text> 
}
l.4 \chapter{test}

What version of the product are you using? On what operating system?
2012/08/12 v4.1 - Archlinux

Please provide any additional information below.

Original issue reported on code.google.com by Max.tex.Klinger on 2013-09-30 02:59:52

[André Miede]

AMS documentclasses "produce the overall layout and appearance of AMS publications".
So if that layout and appearance is not liked or another one is required, the classes
should not be used from my point of view. Thus, it is not bad that classicthesis and
ams classes are incompatible.

Please use a standard class or a KOMA one in combination with classicthesis in order
to achieve a suitable result.

Original issue reported on code.google.com by amiede on 2013-10-03 13:06:13 - Labels added: Type-Other, Priority-Low - Labels removed: Type-Defect, Priority-Medium