May be a duplicate of this bug, which was closed due to no repro:
https://jira.ol.epicgames.net/browse/UE-10978
Not reproduced locally. As reported on UDN:
After rebuilding lighting in our map, we have a crash on startup that seems to be related to the indirect lighting cache. I am able to toggle the indirect lighting cache on and off and the crash does go away after toggling the lighting cache off
From
https://udn.unrealengine.com/questions/306209/indirect-lighting-crash.html
GAME-Win64-DebugGame.exe!FPrecomputedLightVolume::InterpolateIncidentRadiancePoint
GAME-Win64-DebugGame.exe!FIndirectLightingCache::InterpolatePoint
GAME-Win64-DebugGame.exe!FIndirectLightingCache::UpdateBlock
GAME-Win64-DebugGame.exe!FIndirectLightingCache::UpdateBlocks
GAME-Win64-DebugGame.exe!FIndirectLightingCache::FinalizeUpdateInternal_RenderThread
GAME-Win64-DebugGame.exe!FIndirectLightingCache::UpdateCache
GAME-Win64-DebugGame.exe!FSceneRenderer::PostVisibilityFrameSetup
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-34531 in the post.