http://pc52.ifw.ing.tu-bs.de/~harders/latex/textcircled.pdf
why did you load the package textcomp for this example?
This is the problem. Without textcomp \textcircled works fine. To avoid this, I want to add the following to the preamble:
\usepackage{lmodern} if the file textcomp.sty is used, then do
the easiest way: you can test if \textmu is defined, then you can be sure that it is from loading textcomp, because none would define his own textmu ...
\documentclass[12pt,a4paper]{article}
\usepackage[T1]{fontenc}
\usepackage{lmodern}
%\usepackage{textcomp}
\makeatletter
[EMAIL PROTECTED]>: textmu doesn't exist}
\else\typeout{--->: textmu exists}
\fi
\makeatother
\begin{document}
\end{document}Herbert
