Question: maple produces blank pdfs from exported latex worksheets

I have a maple worksheet with 2d input:

> for i to 10 do f := proc (x) options operator, arrow; x^2 end proc; f(x) end do;

of course it looks "pretty" in the actual worksheet.

 

When I export this to Latex I get the standard stuff and this:

 

\begin{maplegroup}
\begin{mapleinput}
\mapleinline{active}{2d}{for i to 10 do f := proc (x) options operator, arrow; x^2 end proc; f(x) end do; -1}{\[\]}
\end{mapleinput}\end{maplegroup}\begin{maplegroup}\begin{mapleinput}\mapleinline{active}{2d}{}{\[\]}
\end{mapleinput}
\end{maplegroup}

and I expect that this would produce SOME output. However the latex produces a BLANK PDF. What is going on? And how do I fix this?

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