Intersections example errors

[eric-wieser]

On my machine, the example at http://acko.net/files/mathbox/MathBox.js/examples/Intersections.html fails to correctly render the graph after the first frame, with the errors:

WebGL: INVALID_OPERATION: getAttribLocation: program not linked MathBox-bundle.js:35017
WebGL: INVALID_OPERATION: getAttribLocation: program not linked MathBox-bundle.js:35018
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35020
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35021
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35022
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35023
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35024
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35025
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35026
WebGL: INVALID_OPERATION: getUniformLocation: program not linked MathBox-bundle.js:35027

[mnielsen]

Just a +1: I have the identical issue, including the WebGL INVALID_OPERATIONs. Chrome 35 on Windows 7.

Screenshot below.