Project keeps crashing on startup

Community Community & Industry Discussion
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1

My engine keeps crashing on startup at 93%, i keep getting this error

Assertion failed: !InTemplate || InTemplate->IsA(InClass) || (InFlags & RF_ClassDefaultObject) [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/CoreUObject/Private/UObject/UObjectGlobals.cpp] [Line: 3171] StaticConstructObject REINST_CombatComponent_C_9 /Game/EntityAI/CommonFootSoldier.CommonFootSoldier_C:CombatComponent_GEN_VARIABLE is not an instance of class BlueprintGeneratedClass /Game/ThirdPersonBP/Blueprints/CombatSystem/CombatComponent.CombatComponent_C and it is not a CDO.
UE4Editor_Core
UE4Editor_Core
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor_UnrealEd
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll

I’m using 4.26.2, any idea how i could fix this?

2

This is a long shot but thought I’d ask in this old thread haha, getting a very similar issue in UE5.1.1, except it’s related to Niagara not being a ParticleSystemComponent or something? If by some chance you see this and remember how you fixed it, I’d be really grateful to hear back. :slight_smile:

Here’s my crash summary:

Assertion failed: !InTemplate || InTemplate->IsA(InClass) || (InFlags & RF_ClassDefaultObject) [File:D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp] [Line: 4184] StaticConstructObject NiagaraComponent /Game/SWBF2_Content/Gameplay/Equipment/_Weapon_BP/Heavy/BP_DC15A.BP_DC15A_C:Projectile_GEN_VARIABLE is not an instance of class Class /Script/Engine.ParticleSystemComponent and it is not a CDO.

UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_DataValidation
UnrealEditor_DataValidation
UnrealEditor_DataValidation
UnrealEditor_DataValidation
UnrealEditor_DataValidation
UnrealEditor_DataValidation
UnrealEditor_DataValidation
UnrealEditor_DataValidation
UnrealEditor_ToolMenus
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_Slate
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
UnrealEditor_ApplicationCore
user32
user32
UnrealEditor_ApplicationCore
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll