Xindy cannot be executed

Question

Trying to run \makeglossaries after I've already compiled the file with pdflatex gives me the error:

**Call to xindy failed*** Check 'settings.glg' for details

In the file 'settings.glg' this is written:

*** Unable to execute: '"xindy" -L english -I xindy -M "settings" -t "settings.glg" -o "settings.gls" "settings.glo"' ***

Status report:

This is my code:

\documentclass{article}

\usepackage[xindy]{glossaries}
\makeglossaries

\newglossaryentry{gloss}{
name=glossaries,
description=A package for generating glossaries in many styles
}

\begin{document}
\texttt{\gls{gloss}} is a great package!
\printglossaries
\end{document}

Everything works when I use \makeindex (\usepackage{glossaries}), but with the warning. About this warning I've already asked the question Makeindex warning.

Could you explain me what I'm doing wrong with xindy?

P.S.

I've installed xindy using this How to use Xindy with MiKTeX? and made settings for my TeXstudio using this post.