The first WP-Cache was from a few months ago, I don’t know when it was last updated. When I tried reinstalling everything, I used the most recent version, 2.1.0.
And thanks for the link, but that’s actually a different problem. I was having that blank pages problem for a while as well, about a month ago, but I found that issue and fixed it. In this case, it wasn’t that the pages were loading up as blank, it’s that nothing at all would happen for a long time, then I would get an Internal Server Error.