Why does build lighting hang for 30 seconds before starting?

I reinstalled the engine and it “went away”! Ghosts and spirits I guess :slight_smile: [Snap! It didn’t. See logs below]

It may be related to this error: “Failed to load /Engine/EngineResources/T_Moon.T_Moon reference by MaterialExpressionTextuerObject_0”

Or this error: https://forums.unrealengine.com/unre…ure-on-startup