Lighting build failed. Swarm failed to kick off

Development Rendering
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1

There seems to be a lot of these issues submitted. I’ve done my best to find solutions but none seem to work.

  • I’m currently building the editor in VS2015 4.11.0-preview-6 from GitHub. The engine is set up to build for PS4.
  • I’ve tried all solutions from this page (including disabling antivirus and firewall): A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums
  • Swarm seems to work fine with my 4.10 build of the game/editor
  • Swarm fails for all projects, including template projects

Any ideas on what the problem may be?

EDIT: If I use the official 4.11.0 Preview6 from the Unreal launcher, swarm works fine. Is there something specific I need to do when rebuilding the editor from GitHub source?

2

Hi Niles,

If you’re building from source, can you try rebuilding just the Swarm Agent itself. I’ve seen that work in the past for some with this issue with Swarm Agent failing to kick off.

If that works for you I can update the page since I originally wrote it as just a general troubleshooting guide.

Let me know when you can.

Tim

3

That worked Tim. Thank you!

Here’s what I did:

  • In visual studio, right click on ‘UnrealLightmass’ and select ‘Build’

I guess that’s pretty obvious but I should add that I considered this solution before posting… but I was looking to build ‘SwarmAgent’ in VS and didn’t see it. For some reason, I never considered looking for ‘UnrealLightmass’ :slight_smile:

4

Right, Sorry, I should have been more clear with the actual name. I rarely have to go back and build it locally. I add that to the Swarm Agent Wiki for anyone else who runs into the error.

Thank you!