The file disappeared when the forum software changed. I think the old files are archived somewhere but I have no idea how to get to them. Honestly that's super old code that probably isn't worth using anymore. It doesn't even run right on the current version of construct in case I recall.
I'd say Custom Movement is my go-to for customized movement stuff now.
Sadly I don't have a great way to explain to you how to do things like vertical platforms effectively but there should be some better examples somewhere for that sort of thing