I'm having the same issue. I hit F8 and looked at the console and it said the following:
Uncaught SyntaxError: Unexpected token =
/C:/MV3D-master/project/js/plugins/mv3d.js:845 pixi.js:27682 PixiJS 4.5.4 - ✰ WebGL ✰ http://www.pixijs.com/ ♥♥♥
... Any clue how to fix this?