I am trying to use a title page I found in this website (Showcase of beautiful title page done in TeX) which begins with \documentclass. As I try to include it in the main tex file, LaTeX returns an error, because \documentclass is already used.
Then, I tried to execute the titlepage apart, obtaining a pdf which is the correct one, but only for what concerns the titlepage. To avoid such a stuff, I thought to include this pdf that I obtained by using the pdfpages packages. But LaTeX returns me an error:
"Option clash for package xcolor."
If I ignore this, the compiler does not create the right table of content. The same mistake is done if I use TikZ packages. How can I solve it?
\documentclass{...}and ending with\end{document}. – Ruben Nov 23 '13 at 15:49