A crash is occurring on project load when attempting to use GetParentActor and cast that to a Parent class that contains a child actor component inside of that child actor component's blueprint.
This did not occur in 4.13.2, and as a result, is a regression. This was reproduced in 4.14.0 CL# 3195953 and 4.15 Main CL# 3205566.
Result: Project crashes on load
Fatal error: [Link Removed] [Line: 11] Cast of LinkerPlaceholderExportObject /Game/FirstPersonBP/Blueprints/Parent.Parent_C:ChildActor_GEN_VARIABLE.ChildActor_GEN_VARIABLE_Child_C_CAT to Actor failed
UE4Editor_CoreUObject!CastLogError() [casts.cpp:12] UE4Editor_Engine!CastChecked<AActor,UObject>() [casts.h:203] UE4Editor_Engine!UChildActorComponent::Serialize() [childactorcomponent.cpp:91] UE4Editor_CoreUObject!FLinkerLoad::Preload() [linkerload.cpp:3414] UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [linkerload.cpp:2890] UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [linkerload.cpp:3023] UE4Editor_CoreUObject!LoadPackageInternalInner() [uobjectglobals.cpp:1271] UE4Editor_CoreUObject!LoadPackageInternal() [uobjectglobals.cpp:1423] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2561] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2609] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::CreateImport() [linkerload.cpp:4257] UE4Editor_CoreUObject!FLinkerLoad::ResolveDependencyPlaceholder() [blueprintsupport.cpp:1090] UE4Editor_CoreUObject!FLinkerLoad::ResolveDeferredDependencies() [blueprintsupport.cpp:892] UE4Editor_CoreUObject!FLinkerLoad::ResolveAllImports() [blueprintsupport.cpp:1181] UE4Editor_CoreUObject!FLinkerLoad::FinalizeBlueprint() [blueprintsupport.cpp:1284] UE4Editor_CoreUObject!FLinkerLoad::Preload() [linkerload.cpp:3461] UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [linkerload.cpp:4111] UE4Editor_CoreUObject!FLinkerLoad::IndexToObject() [linkerload.cpp:4334] UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [linkerload.cpp:3807] UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [linkerload.cpp:2884] UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [linkerload.cpp:3023] UE4Editor_CoreUObject!LoadPackageInternalInner() [uobjectglobals.cpp:1271] UE4Editor_CoreUObject!LoadPackageInternal() [uobjectglobals.cpp:1423] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2561] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2609] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::CreateImport() [linkerload.cpp:4257] UE4Editor_CoreUObject!FLinkerLoad::ResolveDependencyPlaceholder() [blueprintsupport.cpp:1090] UE4Editor_CoreUObject!FLinkerLoad::ResolveDeferredDependencies() [blueprintsupport.cpp:950] UE4Editor_CoreUObject!FLinkerLoad::Preload() [linkerload.cpp:3461] UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [linkerload.cpp:4111] UE4Editor_CoreUObject!FLinkerLoad::IndexToObject() [linkerload.cpp:4334] UE4Editor_CoreUObject!FLinkerLoad::CreateExport() [linkerload.cpp:3807] UE4Editor_CoreUObject!FLinkerLoad::CreateExportAndPreload() [linkerload.cpp:2884] UE4Editor_CoreUObject!FLinkerLoad::LoadAllObjects() [linkerload.cpp:3023] UE4Editor_CoreUObject!LoadPackageInternalInner() [uobjectglobals.cpp:1271] UE4Editor_CoreUObject!LoadPackageInternal() [uobjectglobals.cpp:1423] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2561] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2609] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::Verify() [linkerload.cpp:2105] UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [linkerload.cpp:2015] UE4Editor_CoreUObject!FLinkerLoad::Tick() [linkerload.cpp:699] UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [linkerload.cpp:404] UE4Editor_CoreUObject!GetPackageLinker() [linker.cpp:657] UE4Editor_CoreUObject!LoadPackageInternalInner() [uobjectglobals.cpp:1196] UE4Editor_CoreUObject!LoadPackageInternal() [uobjectglobals.cpp:1423] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2561] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2609] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327] UE4Editor_CoreUObject!FLinkerLoad::Verify() [linkerload.cpp:2105] UE4Editor_CoreUObject!FLinkerLoad::FinalizeCreation() [linkerload.cpp:2015] UE4Editor_CoreUObject!FLinkerLoad::Tick() [linkerload.cpp:699] UE4Editor_CoreUObject!FLinkerLoad::CreateLinker() [linkerload.cpp:404] UE4Editor_CoreUObject!GetPackageLinker() [linker.cpp:657] UE4Editor_CoreUObject!LoadPackageInternalInner() [uobjectglobals.cpp:1196] UE4Editor_CoreUObject!LoadPackageInternal() [uobjectglobals.cpp:1423] UE4Editor_CoreUObject!FLinkerLoad::VerifyImportInner() [linkerload.cpp:2561] UE4Editor_CoreUObject!FLinkerLoad::VerifyImport() [linkerload.cpp:2327]
Head over to the existing Questions & Answers thread and let us know what's up.
| 24 |
| Component | UE - Gameplay - Blueprint |
|---|---|
| Affects Versions | 4.14, 4.15 |
| Target Fix | 4.15 |
| Fix Commit | 3222427 |
|---|---|
| Main Commit | 3236017 |
| Created | Dec 5, 2016 |
|---|---|
| Resolved | Dec 5, 2016 |
| Updated | Feb 5, 2017 |