Unreal Engine Issues

UE-95052

Error: FAsyncPackage::LoadImports for <some asset>: Skipping import PaperTileMap /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0, depends on missing native class

Error: FAsyncPackage::LoadImports for <some asset>: Skipping import PaperTileMap /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0, depends on missing native class

UDN
Description

User reporting seeing this error start appearing in 4.25.1 (possibly 4.25.x, unsure if they were previously testing on 4.25.0 or not). It appears 'benign' as the expected data still gets loaded, but it's scary log spam and there might be real problems caused by this that they haven't experienced yet in their project.

[2020.06.30-00.22.34:965][  0]LogStreaming: Warning: FAsyncPackage::LoadImports for /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint: Skipping import PaperTileMap /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0, depends on missing native class
[2020.06.30-00.22.34:967][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:967][  0]LogStreaming: Error:     Export 7 /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:967][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.uasset
[2020.06.30-00.22.34:967][  0]LogStreaming: Error:         Dep S_BEFORE_S Export     8    /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0     (class PaperTileMapComponent)
[2020.06.30-00.22.34:967][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    40   /Script/Paper2D.Default__PaperTileMapComponent
[2020.06.30-00.22.34:967][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    11   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:967][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    37   /Script/Paper2D.Default__PaperTileMapComponent:PaperTileMap_0
[2020.06.30-00.22.34:967][  0]LogStreaming: Error:         Dep C_BEFORE_C Export     8    /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0     (class PaperTileMapComponent)
[2020.06.30-00.22.34:967][  0]LogStreaming: Error: Missing Dependency, request for /Script/Paper2D.Default__PaperTileMapComponent:PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:967][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.uasset because we could not find its template /Script/Paper2D.Default__PaperTileMapComponent:PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Export 6 /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.Default__PaperTileMapActor7_Blueprint_C:RenderComponent.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.uasset
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep S_BEFORE_S Export     7    /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.Default__PaperTileMapActor7_Blueprint_C:RenderComponent     (class PaperTileMapComponent)
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    39   /Script/Paper2D.Default__PaperTileMapActor:RenderComponent
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    38   /Script/Paper2D.Default__PaperTileMapActor
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    11   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    36   /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_C Export     7    /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.Default__PaperTileMapActor7_Blueprint_C:RenderComponent     (class PaperTileMapComponent)
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: Missing Dependency, request for /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.uasset because we could not find its template /Script/Paper2D.Default__PaperTileMapActor:RenderComponent.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Export 54 /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    83   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import     4   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    39   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    80   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_C Export    60    /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0     (class PaperTileMapComponent)
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: Missing Dependency, request for /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap because we could not find its template /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Export 55 /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_0.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    83   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import     4   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    39   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    80   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_C Export    61    /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_0     (class PaperTileMapComponent)
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: Missing Dependency, request for /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap because we could not find its template /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Export 56 /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_1.PaperTileMap_0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    83   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0
[2020.06.30-00.22.34:975][  0]LogStreaming: Error:         Dep C_BEFORE_S Import     4   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    39   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    80   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_C Export    62    /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_1     (class PaperTileMapComponent)
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Missing Dependency, request for /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap because we could not find its template /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:     Export 57 /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_2.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    83   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_S Import     4   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    39   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    80   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_C Export    63    /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_2     (class PaperTileMapComponent)
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Missing Dependency, request for /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap because we could not find its template /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:     Export 58 /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_3.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    83   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_S Import     4   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    39   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    80   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_C Export    64    /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_3     (class PaperTileMapComponent)
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Missing Dependency, request for /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap because we could not find its template /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: ****DumpDependencies [Dependencies]:
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:     Export 59 /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_4.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:     Linker is ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_S Import    83   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_S Import     4   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    39   /Script/Paper2D.PaperTileMap
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep S_BEFORE_C Import    80   /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
[2020.06.30-00.22.34:976][  0]LogStreaming: Error:         Dep C_BEFORE_C Export    65    /Game/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.2DSideScrollerExampleMap:PersistentLevel.PaperTileMapActor1.NODE_AddPaperTileMapComponent-0_4     (class PaperTileMapComponent)
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Missing Dependency, request for /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0 but it hasn't been created yet.
[2020.06.30-00.22.34:976][  0]LogStreaming: Error: Cannot construct PaperTileMap_0 in ../../../PaperCrashRepro/Content/2DSideScrollerBP/Maps/2DSideScrollerExampleMap.umap because we could not find its template /Game/2DSideScrollerBP/Maps/PaperTileMapActor7_Blueprint.PaperTileMapActor7_Blueprint_C:NODE_AddPaperTileMapComponent-0.PaperTileMap_0
Steps to Reproduce

Open the attached project
Cook it for win64
Run the cooked project and open the log file
Observe the FAsyncPackage::LoadImports errors

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-95052 in the post.

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Fixed
ComponentUE - Gameplay - Blueprint Compiler
Affects Versions4.25.1
Target Fix4.25.4
Fix Commit13980286
Release Commit13980286
CreatedJun 30, 2020
ResolvedJul 31, 2020
UpdatedApr 28, 2021
Pull Requests
7675
7540