Hello,
I found a bug on its two material:
QuoteUncaught TypeError: Cannot read property 'maxSimultaneousLights' of undefined(…)
babylon.lavaMaterial.min.js:1 Uncaught TypeError: Cannot read property 'isReady' of undefined(…)
NormalMaterial: http://www.babylonjs-playground.com/#22VQKB
LavaMaterial: http://www.babylonjs-playground.com/#1BLVWO