“Fatal error” when using TikZ externalize [closed]

Question

So I'm having problems with TikzExternalize. I have a paper with a large amount of dynamically built graphs. I get to a certain point in my files and I can't build anymore. Once I get to this point I can no longer build any of the files I was building earlier, if I comment that figure out it works perfectly again. If I insert a totally different figure it has the same issue. An example code for the figure is below, I'm also using these in a pdfscape and multicolumn environment

Happens with something as simple as the code below:

\begin{tikzpicture}
  \draw (0,0) --(1,2);
\end{tikzpicture}

Here is the error:

! Package tikz Error: Sorry, the system call 'pdflatex -shell-escape -halt-on-e
rror -interaction=batchmode -jobname "tikzfigures/Report-figure53" "\def\tikzex
ternalrealjob{Report}\input{Report}"' did NOT result in a usable output file 't
ikzfigures/Report-figure53' (expected one of .pdf:.jpg:.jpeg:.png:). Please ver
ify that you have enabled system calls. For pdflatex, this is 'pdflatex -shell-
escape'. Sometimes it is also named 'write 18' or something like that. Or maybe
the command simply failed? Error messages can be found in 'tikzfigures/Report-
figure53.log'. If you continue now, I'll try to typeset the picture.

In the file all I get is the usual junk and:

!  ==> Fatal error occurred, no output PDF file
produced!

MWE

\documentclass[]             % options: RDPonly, coveronly, nocover
{article}                       %   plus standard article class options
\usepackage[pdftex]{lscape}

\usepackage{multicol}
\usepackage{tikz}
\usetikzlibrary{shapes,arrows, positioning, calc, external}
\usepackage{pgfplots}
\usepackage{pgfplotstable}
\tikzexternalize[prefix=tikzfigures/]

\begin{document}
\begin{multicols}{2}
    \begin{tikzpicture}
      \draw (0,0) --(1,2);
    \end{tikzpicture}

        \columnbreak

    \begin{tikzpicture}
      \draw (0,0) --(1,2);
    \end{tikzpicture}

        \columnbreak

    \begin{tikzpicture}
      \draw (0,0) --(1,2);
    \end{tikzpicture}
\end{multicols}

\end{document}