All was working perfect, I just Check for update and applied it from the MikTex Console and now when I work with beamer and use PS to PDF I get:
%%%% WARNING: Transparency operations ignored - need to use -dNOSAFER
and the pdf generated is not right but the ps does. I use \begin{example} \end{example}, but it does not show it correctly, look the image, in general if I use \begin{block} \end{block} appears in the same way, block with or without title.
I use:
WinEdt --> Build: 20180507 (v. 10.3) - 64-bit
MikTeX --> Version 3.14159265-2.6-1.40.21 (MiKTeX 21.1)
Gsview 6.0
Ghostscript 9.52 (2020-03-19)
What can I do to solve this? Thank you in advance.

My MWE
Code: Select all
Code, edit and compile here:
\documentclass[xcolor=dvipsnames]{beamer}\usepackage[spanish]{babel}\usepackage[latin1]{inputenc}\usepackage{color}\usepackage{xcolor}%\usepackage{amsmath}\usetheme{Madrid}\usecolortheme{rose}\setbeamercovered{dynamic}\begin{document}\frame{\frametitle{Distribuciones conjuntas (cont.)}\begin{example}Se lanza un dado 2 veces consecutivas.\\ \vspace*{0.3cm}$X_1$ $\Longrightarrow$ máximo valor obtenido en los dos lanzamientos.\\ \vspace*{0.3cm}$X_2$ $\Longrightarrow$ suma de los valores obtenidos en los dos lanzamientos.\\ \vspace*{0.3cm}Encontrar la función de distribución de probabilidad conjunta de $X_1$ y $X_2$ y la función de distribución acumulada conjunta de $X_1$ y $X_2$.\end{example}\transboxout%}\end{document}