I wanted to try the fancytooltips package. I did the installation according to this page. I installed perl and the required Config::IniFiles library. I tried the installation both on Fedora using Texlive 2016 and on Windows 7 using MikTeX. The error is the same when calling the perl-script fancy-preview in this way: perl fancy-preview myfile
! Undefined control sequence.
l.526 \pdfximage{\TooltipFilename
.pdf}%
?
! Emergency stop.
l.526 \pdfximage{\TooltipFilename
.pdf}%
Related to this, warning was thrown:
Package fancytooltips Warning: ** The filename with tooltips is not given. ** on input line 198.
I tried it for hours, in vain. Here is my minimal (non-)working example (myfile.tex):
\documentclass{article}
\usepackage{amsmath}
\usepackage{hyperref}
\usepackage{fancytooltips}
\begin{document}
\begin{equation}
x^2 + y^2 = 1
\label{eq:circleEquation}
\end{equation}
Test the link: \eqref{eq:circleEquation}.
\end{document}