I have the following problem. I wrote on the beginning of this year a long text, which was working properly. Now, after four months I tried to compile the document again and arose a problem with the text size, page size respectively. The text (already in the DVI) is zoomed in the page in height, whereas the page number is only partially visible.

Here I put a minimum version, you can include any text larger than 1 page. Can someone help me to rescale the text to a standard size?
Code: Select all
\documentclass[a4paper,
12pt,
titlepage,
headinclude,
headsepline,
liststotoc,
normalheadings,
DIV15,
idxtotoc,
bibtotoc,
BCOR20mm]{scrbook}
\usepackage{epsfig}
\usepackage{amsfonts, amsmath,amssymb}
\usepackage{graphics}
\usepackage{color}
\usepackage{tikz}
\linespread{1.2}
\begin{document}
\mainmatter
\pagestyle{headings}
%put any text larger than one page and look at page numbers.
\end{document}