Lighting failed to build. Swarm failed to kick off.

Hey need some help!

I would like to build lighting on my scene but it fails after the “Exporting lighting data” is 100% done. Error: “Lighting build failed. Swarm failed to kick off. Compile Unreal Lightmass.”

I installed the Game over the EpicGames Application. After a recommendation I downloaded github and Visual Studio with source code and after 10 more errors I got things going and had Visual Studio doing what i want, rebuild UnrealLightmass, and yeah it’s still the same error.

I’m just beginning to work with UE so thats kinda hard for me.

UE4 Massage Log:

WorldSettings_1 Maps need lighting rebuilt
SM_AI_vol5_5_envsphere_01 Large actor receives a pre-shadow and will cause an extreme performance hit unless bCastDynamicShadow is set to false.
SM_AI_vol5_5_stand_lmap_01 More overridden materials (2) on static mesh component than are referenced (1) in source mesh ‘SM_AI_vol5_5_stand_lmap_01’
SM_AI_vol5_5_radiator_01_01 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_01 Static mesh actor SM_AI_vol5_5_radiator_01_01 has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_02 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_02 Static mesh actor SM_AI_vol5_5_radiator_01_02 has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_2 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_2 Static mesh actor SM_AI_vol5_5_radiator_01_2 has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_3 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_3 Static mesh actor SM_AI_vol5_5_radiator_01_3 has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_4 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_4 Static mesh actor SM_AI_vol5_5_radiator_01_4 has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_5 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_5 Static mesh actor SM_AI_vol5_5_radiator_01_5 has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_6 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_6 Static mesh actor SM_AI_vol5_5_radiator_01_6 has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_7 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_radiator_01_7 Static mesh actor SM_AI_vol5_5_radiator_01_7 has NULL StaticMesh property
SM_AI_vol5_5_glass_jar_02_01 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_glass_jar_02_01 Static mesh actor SM_AI_vol5_5_glass_jar_02_01 has NULL StaticMesh property
SM_AI_vol5_5_glass_jar_01_01 Static mesh actor has NULL StaticMesh property
SM_AI_vol5_5_glass_jar_01_01 Static mesh actor SM_AI_vol5_5_glass_jar_01_01 has NULL StaticMesh property
SM_AI_vol_5_5_blind_window_1_02 More overridden materials (2) on static mesh component than are referenced (1) in source mesh ‘SM_AI_vol5_5_blind_window_3_01’
SM_AI_vol_5_5_blind_window_1_04 More overridden materials (2) on static mesh component than are referenced (1) in source mesh ‘SM_AI_vol5_5_blind_window_1_01’
AI33_003_2080 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
AI33_003_1962 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
AI33_003_1988 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
AI33_003_2057 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
AI33_003_2034 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
AI33_003_2011 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
AI33_003_2327 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
AI33_003_1939 Collision enabled but StaticMesh (sphere) has no simple or complex collision.
SM_AI_vol5_5_armchair_2_2 More overridden materials (2) on static mesh component than are referenced (1) in source mesh ‘SM_AI_vol5_5_armchair_2_01’
SM_AI_vol5_5_big_lamp_2 More overridden materials (2) on static mesh component than are referenced (1) in source mesh ‘SM_AI_vol5_5_big_lamp_01’
Map check complete: 1 Error(s), 34 Warning(s), took 74,359ms to complete.

Unless you want to use C++ then just install the editor from the Epic Launcher

Well I did in the beginning but I got the error when I downloaded it over the EpicGames Launcher and tried to build lighting ( it worked the first few times )