I guees that the newer libraries could be using WebGL 2.0 instead WebGL and that make the software less compatible than before.
I tried Spritestack in a friend's pc and it opened fine and the difference between his PC and mine was that when we go to chrome://gpu i have the WebGL 2.0 functions unsupported and while my friend's one does have supported it.
This is just an hypothesis but i mention it just in case.