Please, try the new version (0.16.1) to see if it fixes the problem
Still didn't fix the problem..
Yep, that's weird; does some error message appear on the browser's console when clicking on "Generate ROM"?
Canvas2D: Multiple readback operations using getImageData are faster with the willReadFrequently attribute set to true.
This appeared when i opened the tool
Are there any red-colored messages?
Nope.. only that canvas2d error and the level array.
Okay... that's weird