Do you see the cube loading in the beginning? Have you tried restarting your browser? I have seen some random crashes a very few times, where I've had to do tha

Do you see the cube loading in the beginning? Have you tried restarting your browser? I have seen some random crashes a very few times, where I've had to do that, some times because there has been too many tabs open. There's still a ways to go before WebGL gaming is 100% stable.. but that's also some of the point of doing this project :)