LaTeX.org

Please, how can I fix this problem?

I have the problem showing in the picture when I have compiled my beamer slides ...How can I avoid this problem?

I want to have a special organigram which shown in attachement 'IMAGE', but the code which I have used gave the image_0 provided in attachement, how can I reach my aim such that I have used the following commands:

\begin{tikzpicture} [scale=0.8]
\node[draw,text centered,minimum width=2cm,minimum ...

I have used the following code:
\documentclass[12pt,landscape]{article}
\usepackage{geometry}
\geometry{verbose,letterpaper}
\usepackage{movie15}
\usepackage{hyperref}
\begin{document}
Whispering-gallery mode in a quarter circle:
\begin{figure}[ht]
\includemovie[
poster,
text={\small(Loading ...