Hi Juanjgon
Actually, I can not use Octane 3.08.0.9 in Lightwave 2015 or 2018.
I get the exact same error when trying to use the latest Octane build in either version of Lightwave.
The only version of Octane I can use is Octane_3.06.0.5_LightWave_2015.3_vr_Win64
So, I still need help!