Session crashes on launch after building HLODs

Reference ID

636dde35-46f8-38f6-f1a9-e8aca645c3bd

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Stability

Summary

My map launches correctly without HLODs but after building them I encounter a crash upon launching the session. Deleting the HLODs allows the session to be launched. Here’s the error thats spit out when it crashes.

We encountered an error preparing your project. Error: errors.com.epicgames.content-service.cook-failure, An error occurred while communicating with the game servers (Content (re)cook error errors.com.epicgames.cookplugin.cookfailure.
JOB_ID=225a5b61-3592-4e3b-b226-c4b247e1d1e5)., CookJobId:225a5b61-3592-4e3b-b226-c4b247e1d1e5
LogWindows: Error: appError called: Assertion failed: Owner->IsMeshDescriptionValid(0) [File:D:\build++Fortnite\Sync\Engine\Source\Runtime\Engine\Private\StaticMesh.cpp] [Line: 3086]
Bad MeshDescription on /29311fdf-40d9-b059-cc29-04bd2a991b80/externalactors/mountainrivervalleytutorial/9/7b/wrxyjrncv3745btqcltu6e.StaticMesh_MountainRiverValleyTutorial_DefaultHLODLayer_0

LogThreadingWindows: Error: Runnable thread Background Worker #14 crashed.
LogWindows: Error: appError called: Assertion failed: Owner->IsMeshDescriptionValid(0) [File:D:\build++Fortnite\Sync\Engine\Source\Runtime\Engine\Private\StaticMesh.cpp] [Line: 3086]
Bad MeshDescription on /29311fdf-40d9-b059-cc29-04bd2a991b80/externalactors/mountainrivervalleytutorial/9/7b/wrxyjrncv3745btqcltu6e.StaticMesh_MountainRiverValleyTutorial_DefaultHLODLayer_0

LogThreadingWindows: Error: Runnable thread Background Worker #14 crashed.

Steps to Reproduce

  • Build HLOD
  • Launch session
  • Crash occurs

Expected Result

The session will crash and give the error listed above

Observed Result

The session crashes and gives the error listed above

Platform(s)

windows