Finally got the helpfile issue solved! This installer now includes the help file and PDF manual.
Help file coming up blank?
Unfortunately the help file format has vulnerabilities so Windows started blocking help files from showing in a lot of circumstances.
I would recommend downloading Walls_Help_HTML.zip below, extracting it somewhere, and then opening index.html in that folder to view the help in your web browser. (I'm working on bundling this help format into the installer.)
You may be able to get the default help file to work using this workaround. If not, there's a slightly more nuclear option, but you have to be a bit tech savvy and it may open you up to vulnerabilities from malicious help files.