Quote -
Make a folder called "Poser Runtimes"

I have a quibble with this one sentence Acadia. I don't remember what it was or when, but a few years back there was an issue with some utility or program choking if you used the word "Runtime" anywhere outside the actual runtimes like this. I remember this because I had just that setup for my external runtimes. Now they're all under a folder called Poser Content instead.  I wish I could remember the program or python script that was choking on this issue.