I won't help since I'm a little too busy these days(er...I think I shouldn't be here posting in fact).
Yet...
Errors still occur.
-changing resolutions don't work.
-using graphics from high to low also doesn't work.
-turning music and sound off/on, no dice.
I also tried starting from the beginning(settings) yet it yields the same.
Would be nice if others also try. Probably I missed something, or did something wrong.
Well, i don't know what kind of version Aero sent you, but you did exactly what I did with mine. I've also changed the versions I played three times, tried different ways of killing the golems, tried different circles as the last one before getting the omega piece(the one that bugs). I've also tried to do different things before entering the area: Nothing, a little things, many things, everything i can do in the chapter besides the epic area, still the same result.
Conclusion: We still don't have idea of what it happens exactly, so what to do? Give up a complete omega orb and be happy like I did
.