Since updating from 4.8.3 to 4.9.0 I cannot cook any Animation Blueprint that contains a ModifyBone node. Also replacing all existing nodes with new created nodes does not help. Here is the log output of ABP_Flag that contains four ModifyBone nodes:
LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/Meshes/Boat/Assets/Meshes/ABP_Flag.ABP_Flag_C:AnimGraphNode_ModifyBone_7AE3FA0B49C08555655ED5A0DAA6B455'. Unknown structure.
LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/Meshes/Boat/Assets/Meshes/ABP_Flag.ABP_Flag_C:AnimGraphNode_ModifyBone_574C07AE49C974EB987A2EBD2CC3829B'. Unknown structure.
LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/Meshes/Boat/Assets/Meshes/ABP_Flag.ABP_Flag_C:AnimGraphNode_ModifyBone_210B167644B5CEBEF598159E4ABC7B67'. Unknown structure.
LogProperty:Error: UStructProperty::Serialize Loading: Property 'StructProperty /Game/Meshes/Boat/Assets/Meshes/ABP_Flag.ABP_Flag_C:AnimGraphNode_ModifyBone_940E3F6242977286E638BABF8FD15E8B'. Unknown structure.
LogAnimation:Warning: Invalid animation root node index 6 on '/Game/Meshes/Boat/Assets/Meshes/ABP_Flag.ABP_Flag_C' (only 3 nodes)
LogOutputDevice: === Handled error: ===
Ensure condition failed: bValidRootIndex [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.9\Engine\Source\Runtime\Engine\Private\Animation\AnimBlueprintGeneratedClass.cpp] [Line: 234]
Stack:
UE4Editor-Core.dll!FWindowsPlatformStackWalk::StackWalkAndDump() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\windows\windowsplatformstackwalk.cpp:175]
UE4Editor-Core.dll!FDebug::EnsureFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\misc\outputdevice.cpp:258]
UE4Editor-Core.dll!FDebug::OptionallyLogFormattedEnsureMessageReturningFalse() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\core\private\misc\outputdevice.cpp:368]
UE4Editor-Engine.dll!UAnimBlueprintGeneratedClass::Link() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\animation\animblueprintgeneratedclass.cpp:234]
UE4Editor-CoreUObject.dll!UClass::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\class.cpp:3393]
UE4Editor-Engine.dll!UBlueprintGeneratedClass::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\blueprintgeneratedclass.cpp:757]
UE4Editor-CoreUObject.dll!FLinkerLoad::Preload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3143]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3792]
UE4Editor-CoreUObject.dll!FLinkerLoad::IndexToObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3982]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3505]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExportAndPreload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2661]
UE4Editor-CoreUObject.dll!FLinkerLoad::LoadAllObjects() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2769]
UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1032]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2354]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2402]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::Verify() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1905]
UE4Editor-CoreUObject.dll!FLinkerLoad::FinalizeCreation() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1815]
UE4Editor-CoreUObject.dll!FLinkerLoad::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:666]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404]
UE4Editor-CoreUObject.dll!GetPackageLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linker.cpp:570]
UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:936]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2354]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2402]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::Verify() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1905]
UE4Editor-CoreUObject.dll!FLinkerLoad::FinalizeCreation() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1815]
UE4Editor-CoreUObject.dll!FLinkerLoad::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:666]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:404]
UE4Editor-CoreUObject.dll!GetPackageLinker() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linker.cpp:570]
UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:936]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2354]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2402]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3926]
UE4Editor-CoreUObject.dll!FLinkerLoad::ResolveAllImports() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1026]
UE4Editor-CoreUObject.dll!FLinkerLoad::FinalizeBlueprint() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1090]
UE4Editor-CoreUObject.dll!FLinkerLoad::Preload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3190]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3792]
UE4Editor-CoreUObject.dll!FLinkerLoad::IndexToObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3982]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3505]
UE4Editor-CoreUObject.dll!FLinkerLoad::IndexToObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3982]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3505]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExportAndPreload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2661]
UE4Editor-CoreUObject.dll!FLinkerLoad::LoadAllObjects() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2769]
UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1032]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2354]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2402]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3926]
UE4Editor-CoreUObject.dll!FLinkerLoad::ResolveDependencyPlaceholder() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:915]
UE4Editor-CoreUObject.dll!FLinkerLoad::ResolveDeferredDependencies() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:768]
UE4Editor-CoreUObject.dll!FLinkerLoad::ResolveAllImports() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1005]
UE4Editor-CoreUObject.dll!FLinkerLoad::FinalizeBlueprint() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\blueprint\blueprintsupport.cpp:1090]
UE4Editor-CoreUObject.dll!FLinkerLoad::Preload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3190]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3792]
UE4Editor-CoreUObject.dll!FLinkerLoad::IndexToObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3982]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3505]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExportAndPreload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2661]
UE4Editor-CoreUObject.dll!FLinkerLoad::LoadAllObjects() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2769]
UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1032]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2354]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2402]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3926]
UE4Editor-CoreUObject.dll!FLinkerLoad::IndexToObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3976]
UE4Editor-CoreUObject.dll!FLinkerLoad::operator<<() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:4165]
UE4Editor-CoreUObject.dll!UObjectProperty::SerializeItem() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\propertyobject.cpp:32]
UE4Editor-CoreUObject.dll!FPropertyTag::SerializeTaggedProperty() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\public\uobject\propertytag.h:145]
UE4Editor-CoreUObject.dll!UStruct::SerializeTaggedProperties() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\class.cpp:1320]
UE4Editor-CoreUObject.dll!UObject::SerializeScriptProperties() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\obj.cpp:984]
UE4Editor-CoreUObject.dll!UObject::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\obj.cpp:926]
UE4Editor-Engine.dll!USceneComponent::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\components\scenecomponent.cpp:1549]
UE4Editor-Engine.dll!UPrimitiveComponent::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\components\primitivecomponent.cpp:552]
UE4Editor-Engine.dll!USkinnedMeshComponent::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\skeletalmesh.cpp:4909]
UE4Editor-Engine.dll!USkeletalMeshComponent::Serialize() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\engine\private\skeletalmesh.cpp:4933]
UE4Editor-CoreUObject.dll!FLinkerLoad::Preload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:3143]
UE4Editor-CoreUObject.dll!FLinkerLoad::CreateExportAndPreload() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2667]
UE4Editor-CoreUObject.dll!FLinkerLoad::LoadAllObjects() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2769]
UE4Editor-CoreUObject.dll!LoadPackageInternal() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1032]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2354]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImportInner() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2402]
UE4Editor-CoreUObject.dll!FLinkerLoad::VerifyImport() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:2115]
UE4Editor-CoreUObject.dll!FLinkerLoad::Verify() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.9\engine\source\runtime\coreuobject\private\uobject\linkerload.cpp:1905]
UE4Editor-CoreUObject.dll!FLinke
LogClass:Warning: Property AnimGraphNode_ModifyBone_7AE3FA0B49C08555655ED5A0DAA6B455 of ABP_Flag_C has a struct type mismatch (tag AnimNode_ModifyBone != prop FallbackStruct) in package: D:/Development/Mathias/Papierboot/GameProject/Paperboat/Content/Meshes/Boat/Assets/Meshes/ABP_Flag.uasset. If that struct got renamed, add an entry to ActiveStructRedirects.
LogClass:Warning: Property AnimGraphNode_ModifyBone_574C07AE49C974EB987A2EBD2CC3829B of ABP_Flag_C has a struct type mismatch (tag AnimNode_ModifyBone != prop FallbackStruct) in package: D:/Development/Mathias/Papierboot/GameProject/Paperboat/Content/Meshes/Boat/Assets/Meshes/ABP_Flag.uasset. If that struct got renamed, add an entry to ActiveStructRedirects.
LogClass:Warning: Property AnimGraphNode_ModifyBone_210B167644B5CEBEF598159E4ABC7B67 of ABP_Flag_C has a struct type mismatch (tag AnimNode_ModifyBone != prop FallbackStruct) in package: D:/Development/Mathias/Papierboot/GameProject/Paperboat/Content/Meshes/Boat/Assets/Meshes/ABP_Flag.uasset. If that struct got renamed, add an entry to ActiveStructRedirects.
LogClass:Warning: Property AnimGraphNode_ModifyBone_940E3F6242977286E638BABF8FD15E8B of ABP_Flag_C has a struct type mismatch (tag AnimNode_ModifyBone != prop FallbackStruct) in package: D:/Development/Mathias/Papierboot/GameProject/Paperboat/Content/Meshes/Boat/Assets/Meshes/ABP_Flag.uasset. If that struct got renamed, add an entry to ActiveStructRedirects.
LogAnimation:Warning: Invalid animation root node index 6 on '/Game/Meshes/Boat/Assets/Meshes/ABP_Flag.ABP_Flag_C' (only 3 nodes)
LogAnimation:Warning: Invalid animation root node index 6 on '/Engine/Transient.REINST_ABP_Flag_C_0' (only 3 nodes)
LogClass:Warning: Property AnimGraphNode_ModifyBone_7AE3FA0B49C08555655ED5A0DAA6B455 of ABP_Flag_C has a struct type mismatch (tag FallbackStruct != prop AnimNode_ModifyBone) in package: FObjectReader. If that struct got renamed, add an entry to ActiveStructRedirects.
LogClass:Warning: Property AnimGraphNode_ModifyBone_574C07AE49C974EB987A2EBD2CC3829B of ABP_Flag_C has a struct type mismatch (tag FallbackStruct != prop AnimNode_ModifyBone) in package: FObjectReader. If that struct got renamed, add an entry to ActiveStructRedirects.
LogClass:Warning: Property AnimGraphNode_ModifyBone_210B167644B5CEBEF598159E4ABC7B67 of ABP_Flag_C has a struct type mismatch (tag FallbackStruct != prop AnimNode_ModifyBone) in package: FObjectReader. If that struct got renamed, add an entry to ActiveStructRedirects.
LogClass:Warning: Property AnimGraphNode_ModifyBone_940E3F6242977286E638BABF8FD15E8B of ABP_Flag_C has a struct type mismatch (tag FallbackStruct != prop AnimNode_ModifyBone) in package: FObjectReader. If that struct got renamed, add an entry to ActiveStructRedirects.
UE 4.9.0 Launcher Version