AddictArts/three.js — comment on commit 01ac1e3d1771d212702b2d51935a955659d5e407
File:  line 0
By mrdoob:

Also, seems like this change broke the `webgl_animation_skinning.html` example :S

`Uncaught TypeError: Cannot read property 'length' of undefined`

```javascript
for ( var s = 0; s < sids.length; s++ ) {
```