I am working with LaTex, the script is working fine without the last 6 lines related to Arabic text, I tried many different Arabic packages the problem always same, the issue is:

Fatal fontspec error: "cannot-use-pdftex" The fontspec package requires either XeTeX or LuaTeX. You must change your typesetting engine to, e.g., "xelatex" or "lualatex"instead of "latex" or "pdflatex". For immediate help type H <return>.  

I am using the script below:



%% The `ecrc' package must be called to make the CRC functionality available

%% set the volume if you know. Otherwise `00'

%% set the starting page if not 1

%% Give the name of the journal
\journalname{Procedia Computer Science}

%% Give the author list to appear in the running head
%% Example \runauth{C.V. Radhakrishnan et al.}
\runauth{Author name}

%% Give the abbreviation of the Journal.


% if you have landscape tables
\newfontfamily\arabicfont[Script = Arabic]{Simplified Arabic} 

Does anyone know how to solve this issue? by the way I need all these package.


If you load fontspec, you can't compile your document with pdflatex. You have to compile it with xelatex or lualatex.

If you have only few words to insert in arabic, you can use one of these packages instead of fontspec :

  • arabi
  • arabtex
  • babel
  • Hi, you can use into your editor the {} for the key words. I hope to help you. – Sebastiano Aug 19 '18 at 20:23

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