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It's a kind of modern marketing. You don't need Break Spline Modifier if you don't use Forger, Red Giant, Redshift, Universe and ZBrush - this node needs them all to work !

Hard to know what the issue might be exactly without seeing a file, but with Octane's Path Tracer I think it is best to place and model physical lights just as you would in the real world (of course without needing expensive light stands or booms). I use only material based blackbody or texture emissions or hdri lighting in my Octane scenes. If I needed a spotlight I would model it. I am not familiar with the Octane lights because I never use them, but I think they would be subject to the same restrictions that material based lights in Octane would be subject to. For example, subject to the same placement positions and directions that would be possible in the physical world, in order to get useful or predictable results.