A related post: Problem with babel and tikz using draw

Error producing code:

documentclass{article}
usepackage[spanish]{babel}
usepackage{tikz}

begin{document}
begin{tikzpicture}
draw [->] (0,0) -- (1,0);
end{tikzpicture}
end{document}

Solution: usetikzlibrary{babel}

documentclass{article}
usepackage[spanish]{babel}
usepackage{tikz}
usetikzlibrary{babel} %% ADDED

begin{document}
begin{tikzpicture}
draw [->] (0,0) -- (1,0);
end{tikzpicture}
end{document}

Answer to the question:

• The following code produces an error when compiled through latex and pdflatex.
  • No problem with xelatex and lualatex (in my case).
  • No problem in istgame code itself.
• Once you got an error, remove auxiliary files before compiling again.
• It is highly recommended to use usetikzlibrary{babel} when babel package is uploaded.
  • See TikZ manual on p.130 and Section 44.

output:

code:

%!TEX program = xelatex
documentclass{article}
usepackage[francais]{babel}
%usepackage{tikz}
%usetikzlibrary{babel}

usepackage{istgame}

begin{document}

begin{istgame}[scale=1.5] 
setistmathTF*001 
setistgrowdirection{south east} 
xtdistance{10mm}{20mm} 
istroot(0)[initial node]{1} 
    istb{Take}[r]{(2,0)}[b] istb{Pass}[a] endist 
istroot(1)(0-2){2} 
    istb{Take}[r]{(1,3)}[b] istb{Pass}[a] endist 
istroot(2)(1-2){1}
    istb{Take}[r]{(4,2)}[b] istb{Pass}[a] endist
xtInfoset(2-2)([xshift=5mm]2-2)
istroot(3)([xshift=5mm]2-2){2}
    istb{Take}[r]{(97,99)}[b] istb{Pass}[above] endist 
istroot(4)(3-2){1} 
    istb{Take}[r]{(100,98)}[b] istb{Pass}[above] endist 
istroot(5)(4-2){2} 
    istb{Take}[r]{(99,101)}[b] istb{Pass}[a]{(100,100)}[r] endist 
end{istgame}

end{document}