The single most common reason Light Gen fails is that the scene geometry is too heavy for the computer to batch-process.
If rendering on GPU, you may be out of video memory. Switch to CPU mode to see if generation completes. 3. Error Initializing or "Something Went Wrong" LightGen Problem - Chaos Forums vray light gen not working
Light Gen requires a specific level of license. If you are using a license (instead of a Workstation/Advanced license), the interactive UI tools are disabled. The single most common reason Light Gen fails
This guide addresses common technical roadblocks and user errors encountered when using the V-Ray Light Gen tool in SketchUp and Rhino. Core Functionality Overview This guide addresses common technical roadblocks and user
They restarted 3ds Max. Reset the scene. Tried "Morning." Same thing. The dome light stayed stubbornly black.
V-Ray Light Gen (introduced in V-Ray 5) automates the generation of lighting scenarios by mixing and matching HDRIs or adjusting Sun and Sky parameters. When it "isn't working," the issue typically falls into one of three categories: User Interface/Application Errors Generation/Rendering Failures Visual Result Inconsistencies 1. Common Technical Fixes
: Light Gen requires built-in HDRI assets. If these weren't downloaded from the Chaos Group server during installation, the HDRI category may appear empty or non-functional. Known Software Bugs