sorry, but i can't understand what's mess? Is ies light? There is a preset command in Octane Dialog to create automatically.
Also samples pack has several ies light scenes. Manual was not completed since long time, but it's in link. has a section for ies.
also ies is not a light type, only a disribution map on emissions. Please check emission
this thread has manual
http://render.otoy.com/forum/viewtopic. ... 52#p164852
How to use IES ??
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3930k / 16gb / 780ti + 1070/1080 / psu 1600w / numerous hw