Graphics, Figures & Tables ⇒ PGF package problem

[yabadabadoubis]

Hi everyone,
I 'm using Texshop on mac os 10.6.4.
I've installed the package pgf using texlive manager, and i verified that it has been installed using "tlmgr show pgf" in the shell.
The problem is that when i tape these lines (i made a copy paste from a tutorial in the pgfmanual)

Code: Select all

\documentclass{report}
\usepackage{pgf}

\begin{document}
\begin{tikzpicture}[ nonterminal/.style={
% The shape:
rectangle,
% The size:
minimum size=6mm,
% The border:
very thick, draw=red!50!black!50,
% The filling:
top color=white, bottom color=red!50!black!20, % Font font=\itshape
% 50% red and 50% black, % and that mixed with 50% white
% a shading that is white at the top... % and something else at the bottom
}] \node [nonterminal] {unsigned integer};
\end{tikzpicture}
\end{document}

in texshop file (.tex), i got a error message: "Envirnoment tikzpicture undefined"
Can you help?

[localghost]

You need to include the »tikZ« package instead.


Best regards and welcome to the board
Thorsten