Fortnite trees and building HLOD causing errors

Please select what you are reporting on:

Unreal Editor for Fortnite

What Type of Bug are you experiencing?

Assets

Summary

Placing default fortnite trees and building HLOD cause errors when launching session.

Found disallowed object type /Game/Environments/Props/Transylvania/Trees/Materials/MI_TRV_HAF_Tree12.MI_TRV_HAF_Tree12, Referenced by:See below for asset list, Plugin mount point:/EventTest.
/EventTest/EventTest.EventTest:PersistentLevel.EventTest_DefaultHLODLayer_000000001628f151

Examples of assets causing errors:

  1. Hexylvania HAF Tree12 FIX
    /Game/Environments/Props/Transylvania/Trees/Materials/TRV_Pine_02.TRV_Pine_02
  2. LargePine 01
    /Game/Environments/Props/Transylvania/Trees/Materials/TRV_Pine_02.TRV_Pine_02
  3. Nature Tree Gallery/Tree Log 5d
    /Game/Environments/Props/Trees/Materials/MI_FallenTree_01.MI_FallenTree_01
  4. Nature Snow Gallery/Tree Log 5d
    /Game/Environments/Props/Trees/Materials/MI_FallenTree_01_Inst_Winter.MI_FallenTree_01_Inst_Winter

Steps to Reproduce

  1. Make a new level
  2. Add Hexylvania HAF Tree12 FIX, LargePine 01, or Tree Log 5d to level
  3. Enable level streaming
  4. Build HLODs
  5. Click Launch Session
  6. Observe errors

Expected Result

No errors if these tree assets are placed into a level then hlods are built

Observed Result

Errors when these tree assets are placed into a level then hlods are built, preventing session launch

Platform(s)

Windows

The status of UCB-978 incident has been moved from ‘Done’ to ‘Closed’.