I used Steam to force it to read it as Xbox360forWindows, but got this once I readied up in Vytal Match. 
I also got this error with Keyboard as the only input.
Training mode does not create a red error message, but it still doesn't start once a port is selected. As Keyboard or X360.
Oh I forgot I put training mode as a menu option, yea that one doesn't work currently lol. Right now you go into Vytal Match and set the gamemode as training instead.
Unsure of the readying issue, but I've created a video to show the process of starting a training match.
Also uploaded a new build to fix the controller issue, should work now hopefully.
