I'm having a strange issue with LaTeX: My document uses a PDF background that is included with \includepdf{pdf/title}. This PDF consist of some logos and a solid red colored stripe across the page. I need to show some text above this colored area. The problem is, that as soon the text is over this area it becomes invisible on the rendered PDF. I can select it with the cursor though. If I'm moving the text out of the colored area (but its still over the background PDF) the text becomes visible again.
\newcommand{\createCover}[3]
{
\thispagestyle{empty}
\begin{titlepage}
\setlength{\TPHorizModule}{1mm}
\setlength{\TPVertModule}{1mm}
\textblockorigin{0mm}{0mm}
\begin{textblock}{111}(83,115)
\begin{minipage}[c][1,78cm][c]{11,09cm}
\fontsize{22pt}{20pt}
\selectfont
\begin{center}
#1
\end{center}
\end{minipage}
\end{textblock}
\begin{textblock}{111}(83,131)
\begin{minipage}[c][4,81cm][t]{11,09cm}
\linespread{1.2}
\fontsize{16pt}{14pt}
\selectfont
\begin{center}
#2 \\ \medskip
#3
\end{center}
\end{minipage}
\end{textblock}
\begin{textblock}{186}(22,264)
\begin{minipage}[t][5,72cm][l]{17,57cm}
\fontsize{12pt}{12pt}
\selectfont
{\em Subtext \hfill Subtext 2}\\
{\em Subtext 3 \hfill Subtext 4}
\end{minipage}
\end{textblock}
\newpage
\end{titlepage}
\includepdf{pdf/title}
}
I would be very thankful for any help.
UPDATE:
Since I'm not allowed to answer my own question for 8 hours, I'm updating my question with the solution that worked for me:
Thanks to Martin, I have found the solution. He was completely right: The PDF doc was in the foreground, so the underlining text was not visible.
The solution is to add the overlay parameter to the textpos package.
\usepackage[absolute,overlay]{textpos}
Now the text is in the foreground.
Thanks again.

documentenvironment so other users can compile it directly. Use the{}or CTRL+K to indent the source code by four spaces, then it is formatted correctly. I did this for you now. – Martin Scharrer♦ Jul 19 '11 at 20:13