# Crash in UE 5.5 caused by FMODStudio

**URL:** <https://qa.fmod.com/t/crash-in-ue-5-5-caused-by-fmodstudio/22607>\
**Category:** Unreal Engine\
**Tags:** ue5\
**Created:** [February 18, 2025, 11:44pm UTC](https://qa.fmod.com/t/crash-in-ue-5-5-caused-by-fmodstudio/22607 "2025-02-18T23:44:44Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mjohnson3484](https://avatars.discourse-cdn.com/v4/letter/m/e47c2d/32.png) [@mjohnson3484](https://qa.fmod.com/u/mjohnson3484)\
**Post date:** [February 18, 2025, 11:44pm UTC](https://qa.fmod.com/t/crash-in-ue-5-5-caused-by-fmodstudio/22607/1 "2025-02-18T23:44:44Z")

</div>

I work with a team developing a game on UE 5.5 and FMOD Studio 2.02.26 and something has caused a crash for every team member’s build.

Unreal opens fine the first time but if you close and re-open it crashes immediately and produces these errors.

Looking through the forums it sounds very similar to this issue. [UE 5.5 project crashes on second launch - #3 by Ravenlord](https://qa.fmod.com/t/ue-5-5-project-crashes-on-second-launch/22408/3)

This is the crash log from Unreal:

Assertion failed: (Index \>= 0) & (Index \< ArrayNum) [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 783]  
Array index out of bounds: 0 into an array of size 0

UnrealEditor\_CoreUObject  
UnrealEditor\_CoreUObject  
UnrealEditor\_CoreUObject  
UnrealEditor\_FMODStudioEditor!FFMODAssetBuilder::CreateAsset() [P:\Michael Audio\Plugins\FMODStudio\Source\FMODStudioEditor\Private\FMODAssetBuilder.cpp:539]  
UnrealEditor\_FMODStudioEditor!FFMODAssetBuilder::BuildAssets() [P:\Michael Audio\Plugins\FMODStudio\Source\FMODStudioEditor\Private\FMODAssetBuilder.cpp:147]  
UnrealEditor\_FMODStudioEditor!FFMODAssetBuilder::ProcessBanks() [P:\Michael Audio\Plugins\FMODStudio\Source\FMODStudioEditor\Private\FMODAssetBuilder.cpp:51]  
UnrealEditor\_FMODStudioEditor!FFMODStudioEditorModule::ReloadBanks() [P:\Michael Audio\Plugins\FMODStudio\Source\FMODStudioEditor\Private\FMODStudioEditorModule.cpp:1242]  
UnrealEditor\_FMODStudioEditor!FFMODStudioEditorModule::ProcessBanks() [P:\Michael Audio\Plugins\FMODStudio\Source\FMODStudioEditor\Private\FMODStudioEditorModule.cpp:388]  
UnrealEditor\_FMODStudioEditor!TBaseFunctorDelegateInstance\<void \_\_cdecl(void),FDefaultTSDelegateUserPolicy,`FFMODStudioEditorModule::OnPostEngineInit'::`36’::\<lambda\_1\> \>::ExecuteIfSafe() [E:\UE 5.3\UE\_5.5\Engine\Source\Runtime\Core\Public\Delegates\DelegateInstancesImpl.h:872]  
UnrealEditor\_AssetRegistry  
UnrealEditor\_AssetRegistry  
UnrealEditor\_AssetRegistry  
UnrealEditor\_UnrealEd  
UnrealEditor\_UnrealEd  
UnrealEditor  
UnrealEditor  
UnrealEditor  
UnrealEditor  
UnrealEditor  
UnrealEditor  
kernel32  
ntdll

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<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [March 5, 2025, 12:05am UTC](https://qa.fmod.com/t/crash-in-ue-5-5-caused-by-fmodstudio/22607/3 "2025-03-05T00:05:47Z")

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See this thread for more information:

> [@UE 5.5 project crashes on second launch](https://qa.fmod.com/t/ue-5-5-project-crashes-on-second-launch/22408):
>
> So we had this issue after upgrading our project to UE 5.5, where our project crashes on the second launch, after FMOD assets have been build inside FMOD folder. And we get this errors: [2024.12.14-13.21.31:052][1]LogUObjectLinker: Error: Detaching from existing linker /Game/FMOD/Events/Projectiles/Grenade/GrenadeExplosion while object MetaData None.PackageMetaData needs loading (Standalone | NeedLoad | NeedPostLoad | NeedPostLoadSubobjects | WasLoaded). Setting linker to nullptr. See log fo…