I am trying to install the TikZ knots library, but I am having some trouble.
My computer is running Mac OS X 10.10.2 with MacTeX (but I don't remember the version/year). spath3 has been downloaded from CTAN and copied to my local texmf tree $TEXMF/tex/generic/pgf. I copied some sample code from another post to try to compile:
\documentclass{article}
\usepackage{tikz}
\usetikzlibrary{decorations.markings}
\usetikzlibrary{knots}
\usepgfmodule{decorations}
\begin{document}
\begin{tikzpicture}
\draw[decoration={markings, mark=at position 0.5 with {\arrow{>}}},postaction={decorate}] (0,1) -- (1,1);
\draw[knot=black,decoration={markings, mark=at position 0.5 with {\arrow{>}}},postaction={decorate}] (0,0) -- (1,0);
\end{tikzpicture}
\end{document}
The error I receive is
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
! $TEXMF/tex/generic/pgf/spath3/spath3.sty:103: LaTeX error: "kernel/command-not-defined"
!
! Control sequence \__prop_split:NnTF undefined.
!
! See the LaTeX3 documentation for further information.
!
! For immediate help type H <return>.
!....................................................
1.103 \cs_generate_variant:Nn \__prop_split:NnTF
{cnTF}
?
I am aware of the post at TeX SX about cloning the Git repository for the library needed, but I don't know the correct address for the spath3 and/or knots library.
Any help is greatly appreciated!!!