Error in Firefox - moon doesn't show up

[typpo]

The moon doesn't show up in Firefox 33, leaving just a skybox filled with stars.

Screenshot: http://i.imgur.com/xhWJfLh.png

Here is the error in console:

THREE.Material: 'vertexShader' parameter is undefined.
three.min.js (line 259)
THREE.Material: 'fragmentShader' parameter is undefined.
three.min.js (line 259)

Could not initialise shader VALIDATE_STATUS: false, gl error [0]
THREE.WebGLRenderer/this.initMaterial()three.min.js (line 492)
z()three.min.js (line 386)
THREE.WebGLRenderer/this.renderBuffer()three.min.js (line 439)
l()three.min.js (line 376)
THREE.WebGLRenderer/this.render()three.min.js (line 453)
animate()index.js (line 137)
onWindowLoaded/<.onComplete()index.js (line 241)
getOnLoad/<()index.js (line 205)
THREE.ImageUtils.loadTexture/b<()three.min.js (line 514)
THREE.ImageLoader.prototype.load/<()three.min.js (line 216)
three.min.js (line 492)
Program Info Log: Vertex info ----------- (0) : error C5145: must write to gl_Position
THREE.WebGLRenderer/this.initMaterial()three.min.js (line 493)
z()three.min.js (line 386)
THREE.WebGLRenderer/this.renderBuffer()three.min.js (line 439)
l()three.min.js (line 376)
THREE.WebGLRenderer/this.render()three.min.js (line 453)
animate()index.js (line 137)
onWindowLoaded/<.onComplete()index.js (line 241)
getOnLoad/<()index.js (line 205)
THREE.ImageUtils.loadTexture/b<()three.min.js (line 514)
THREE.ImageLoader.prototype.load/<()three.min.js (line 216)
three.min.js (line 493)