Unreal cooking fail

Cesium for Unreal
1

Hi there community!

I have a problem when cooking/packaging in Unreal. I get these errors

PackagingResults: Error: /Game/ExternalActors/U_Final_1/C/N7/XE1SK8G3HKQ3UP94OGHT9I : Failed import for Cesium3DTileset /Game/U_Final_1.U_Final_1:PersistentLevel.Cesium3DTileset_UAID_C87F5457611902AD02_1991022535
PackagingResults: Error: /Game/ExternalActors/U_Final_1/C/N7/XE1SK8G3HKQ3UP94OGHT9I : Failed import for Cesium3DTileset /Game/U_Final_1.U_Final_1:PersistentLevel.Cesium3DTileset_UAID_C87F5457611902AD02_1991022535
PackagingResults: Error: /Game/ExternalActors/U_Final_1/C/N7/XE1SK8G3HKQ3UP94OGHT9I : Failed import for Cesium3DTilesetRoot /Game/U_Final_1.U_Final_1:PersistentLevel.Cesium3DTileset_UAID_C87F5457611902AD02_1991022535.Tileset
PackagingResults: Error: Unknown Cook Failure

Does anyone know why I am getting this?

Thanks in advance!

2

Hi @tony_cristian, welcome to the community!

Based on the ExternalActors in the filename, my guess is that you have the “Use External Actors” feature enabled on either the persistent level or one of your sub-levels. And perhaps you either deleted the external actor files, or didn’t check them into source control? You can read more about external actors here:

https://dev.epicgames.com/documentation/en-us/unreal-engine/one-file-per-actor-in-unreal-engine