davidw89, Nope, just use Imgburn, much improved over the latter for layer breaks. Imgburn will show you the best possible layer break position (s) and guide you to the best one. If more than one, I find using the layerbreak indicated one pgc 1 works fine.
As mentioned above, please disable anyDVD program as it will cause all sorts of problems with the layerbreaking capabilities of Imgburn.............