I'm trying to run Wupinstaller Y Mod using the browser exploit but I'm not having much luck. I've tried running it first thing, and also after booting into Mocha and in both cases I land on Mii Maker. When I quit Mii Maker, the system menu fails to load, alternating between "Could not start the software" and "Opening Wii U Menu" until I power it off. What have I missed? Or does Wupinstaller Y Mod just require Haxchi?