I`m updating this incase someone else runs in to this problem.
As Aokromes said, this extractor is for 7.1.5, as I had pulled the master branch without knowing. I used git bash to pull from the 3.3.5 repo link, which really just pulls master unless you specify a revision. I had to pull with git extensions so I could select branch 3.3.5, which is explained in the installation guide.