Just realized I didn't have the "Bring Down the Sky" DLC for Mass Effect 1. Looked it up, it's free, so... why not?
Oh, hey, looks like the place where you got your License Key for the DLC is down. Well, ****. Let's browse some support forums.
Universal Key? I like this. Handed out by EA themselves, no less, so it's legit.
Oh no, wait, it doesn't work.
What's this, support forums? What do you mean the installer doesn't play nice with newer Windows registries?
Oh, ****. That means regedit...

*several attempts later*
Done. It works. Let's hope it was worth it.
