I was so happy to see that Brytenwalda was finally finished downloading and I went ahead to start installing. Big surprise! An error message showed up and I looked around for ways to fix it, but to no avail. I eventually went to find the Scaedumar mod because I really want sailing and that was the same installation and it did not work either.
TL;DR I need either the Brytenwalda game file to manually put in the modules folder or a fix for opening EXE files.