I tried to convert my file from the article class into the apa.cls class. When I run latex, I get the result "0 errors, 0 warnings, 0 overfull boxes, 0 pages". I had the problem in the article class before, and it was due to the wrong positioning of the \begin{document} and \maketitle commands. In the article class, the command \begin{document} had to come before the \title command, while \maketitle had to come right after the \title command. In apa.cls this seems to be different. The structure of my code follows the instructions in the apa example file (http://www.ilsp.gr/homepages/protopapas ... amples.txt). But in my case, there is no output file created, and no error message, although I have installed the files apa.bst, apa.cls, apa.sty, apacite.dtx under C:\Program Files\texmf\tex\latex\base.
The short example is below.
Many thanks in advance!

Jil
\documentclass[jou]{apa}
\usepackage{graphicx}
\newtheorem{assumption}{Assumption}
\newtheorem....
\headinglevels{four}
\title{}
\twoauthors{}{}
\twoaffiliations{}{}
\abstract{}
\acknowledgements{}
\shorttitle{}
\rightheader{}
\leftheader{}
\note{}
\begin{document}
\maketitle
\section{}
\subsection{}
\subsubsection{}
\paragraph{}
..............
\appendix
\bibliography{}
\end{document}