Alex thought, "No problem. I'll use V-Ray Light Gen. Click a preset. Done."
Alex’s Windows username was — with a space.
This is a frustrating moment for any 3D artist. Let me tell you a short, relatable story about this exact problem, then give you the most likely fix. vray light gen not working
It was 2 AM. Alex had a villa exterior due in 12 hours. The client wanted "dramatic, cinematic sunset lighting."
They Googled furiously: "vray light gen not working" — and found forum threads from 2018, vague mentions of "paths," and a buried comment about "Windows usernames with spaces." Alex thought, "No problem
Panic.
The fix? Change the to a simple path like C:\VRayTemp (no spaces). Or, in newer versions, update to the latest hotfix. It was 2 AM
They selected the dome, chose "Sunset," and hit .