Swarm Issues - "Requeueing: SMTextureMapping"

I’m using a render cluster system to handle a lighting build, monitoring it through Swarm Coordinator and all that.

Pretty much every time, the last 1% takes hours longer than the previous 99%. It’s always a different render blade, so not sure what’s causing it.

On the host / coordinator machine (64gb memory and powerful i7), I’m seeing:

5:06:38 PM: [CloseConnection] Closing connection 1F85384C using handle 1F85384C
5:06:38 PM: [CloseConnection] Connection confirmed for disconnection 1F85384C
**5:06:38 PM: [UpdateTaskState]: Task Killed remotely by RENDER10
5:06:38 PM: [UpdateTaskState]: Requeueing: SMTextureMapping**
5:06:38 PM: [CloseConnection] Closing bi-directional remote connection (1F85384C)
5:06:38 PM: [CloseConnection] Connection disconnected 1F85384C

The Render10 Blade has 128gb of Memory and 40 processing cores.

Any idea what could cause this???

I have been having the same problem, very nerve racking. But I found a solution that works for me, and that is simply that one of my merged meshes was causing a crash when I set the “Lightmass” to 32 resolution. It was particular to that mesh and when it was not in the scene everything worked just fine.

The solution would then be for this case to Identify the actor that is causing the render to crash, and then simply change its “Lightmass” resolution to anything else than what was previously set.

For example; My window mesh was set to 32, and I changed it to 64, and the “Lightmass” render no longer crashed.