Swarm failed to kickoff
I assume because you are seeing this you are running Source. If you are not, please update the post and I will try to figure out whats going on.
Close your project.
In Visual Studio, under "Programs", find "UnrealLightmass", right-click it and choose "Rebuild". When this is done, re-launch your project and try to build lighting again.
answered Sep 28 '16 at 06:51 PM
ImVawx ♦♦ STAFF
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