I've found another issues in the last build with the snes9x core.
1) The .ips files (rom patches like translations), it detects them correctly (popup shown by loading) but it crashes after loading the game.
Using the same files with the PC works as expected.
2) Support for snes mouse not working? I tried "Mario to Wario" and changed the controller to snes mouse but it's not detected (neither stylus nor gamepad controls)
I don't think patching on the fly works on Wii U, I tested it (a while ago on the Tiramisu version) and the .ips file simply wouldn't load, so I just patched the roms using Floating IPS instead.











