Homebrew TCP Gecko: All Gray Buttons

[UltraSUPRA]

I've been trying to use this wierd superspeed code for Mario Kart 8 that I assume would work (unless it's Deluxe-exclusive). I looked at tutorials on how to use TCP, but everything I try just doesn't seem to be the answer. I can connect Gecko to the Wii U, but that's the extent of it. The only things I can do ("pause game" and "run game") just crash the system to a black screen telling me that an illegal operation has occurred and the system needs to shut down.

Illegal command byte received: 0x07
Server Version: 06/03/2017
If you see this,
please report this bug.

That's what it says.

 

[tastymeatball]

Doing whats explained in this thread doesn't help?
https://gbatemp.net/threads/jgecko-u-setup-guide.426292/

 

[BullyWiiPlaza]

You can't because TCP Gecko.NET hasn't been updated to work with my version of the TCP Gecko Installer. You have to use JGecko U with the respective latest TCP Gecko Installer. Also just follow the top post of what @tastymeatball linked.