No controls in Netplay

[IsaacElenbaas]

So, me and my friends wanted to do some games together... hooked up Netplay and after troubleshooting for two hours got Smash working. We then rebound all our controllers and went to go do Mario Bros Wii, and that didn't work. If together we get a possible desync on frame 4 without fail, and no controllers work. However, if none of the others join, we get no desync and controllers still don't work. We followed the official Dolphin wiki Netplay guide with controller 1 on each computer set to their bindings and then however other many players dummy emulated controllers. We have the same MD5 and all settings. Tried clean installs too. What's up with this? (also, we learned when troubleshooting Mario Kart that controller extensions (nunchuk, etc) aren't supported and so that isn't the reason unfortunately.) We also tried using Gamecube controllers as that's what we needed for Smash but those didn't work either. Everything works for all of us in singleplayer. Screenshots of all settings here: http://imgur.com/a/9DgSX