This example creates column environments *outside* the frame environment and closes them *inside*. Surely, that can't be right.
\section{This is the first structural section} \label{sec-1} \begin{columns}[t] \begin{column}{0.5\textwidth} \begin{frame} \frametitle{Thanks to Eric Fraga} \label{sec-1.2}
for the first viable beamer setup in Org
\end{column} \end{columns} \end{frame}