LOL I came across that the other night too!
What ended up doing was downloading the language files that someone else had already changed on wpmudev.org. I can’t find the link but if anyone needs them I’ve uploaded them to this post.
I went through them a little more with the po editor.
Then I created the bp-languages directory and uploaded the files there and and it worked.
I skipped all the crap on that page! 🙂
I’ll keep looking for a solution and will share if I find it, thanks for all the help sharmstr!