Well, I think I am getting closer. Here is an image of the require window, but as you can see, it is empty.
And here is an image of that directory and you can see it has the one file you sent me.
Now when you told me to unzip it in the Realtracks/loops directory, they didn't exist on my installation so I created them. Is this part of the issue? Was BIAB suppoed to create those upon installation?