Octane and Lightstudio

[Sinelab01]

Can someone please help I've got a indie license of HDR LIght Studio and I've installed it but it doesn't seem to effect the IPR do I need to switch something on in octane as it just appears black ?

[Lewis]

check the order in stack on Master plugins (CTRL+Q), I can't remember right now but not sure does HDRLS needs to be in frnot of Octane IPR plugin or after in order stack and also try reload/refresh some of lights in HDRLS gui to nudge IPR.
It must work, i used it recently in LW 2019.1.5 and HDRLS 5.x release but there was some refresh/starting order thing.