Comment 8 for bug 238140

Ahh, that solves it. I had edited it manually, didn't know about the network-admin tool (which is great). I had suspected this had something to do with the problem. I tried switching it to 127.0.1.1 (not 127.0.0.1) but that hadn't worked. Now I've switched my IP address host name and made 127.0.0.1 localhost, restarted cups, and it works!

Guess it wasn't a bug after all. Thanks everyone.