# Issue with UE4.25 when running the game in editor **URL:** \ **Category:** Unreal Engine\ **Tags:** ue4, cpp\ **Created:** [October 1, 2020, 6:02pm UTC](https://qa.fmod.com/t/issue-with-ue4-25-when-running-the-game-in-editor/16250 "2020-10-01T18:02:25Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![EpicNav](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@EpicNav](https://qa.fmod.com/u/EpicNav)\ **Post date:** [October 1, 2020, 6:02pm UTC](https://qa.fmod.com/t/issue-with-ue4-25-when-running-the-game-in-editor/16250/1 "2020-10-01T18:02:26Z")
``` Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000 UE4Editor_FMODStudio!FFMODStudioModule::UpdateListeners() [G:\Perforce\Prometheon\Plugins\FMODStudio\Source\FMODStudio\Private\FMODStudioModule.cpp:847] UE4Editor_FMODStudio!FFMODStudioSystemClockSink::TickRender() [G:\Perforce\Prometheon\Plugins\FMODStudio\Source\FMODStudio\Private\FMODStudioModule.cpp:140] UE4Editor_Media!FMediaClock::TickRender() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Runtime\Media\Private\MediaClock.cpp:93] UE4Editor_Media!FMediaModule::TickPostEngine() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Runtime\Media\Private\MediaModule.cpp:97] UE4Editor_UnrealEd!UEditorEngine::Tick() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Editor\UnrealEd\Private\EditorEngine.cpp:1742] UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Editor\UnrealEd\Private\UnrealEdEngine.cpp:414] UE4Editor!FEngineLoop::Tick() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Runtime\Launch\Private\LaunchEngineLoop.cpp:4850] UE4Editor!GuardedMain() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Runtime\Launch\Private\Launch.cpp:169] UE4Editor!GuardedMainWrapper() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:137] UE4Editor!WinMain() [G:\Epic Games\SpatialOSUnrealGDK-4.25\Engine\Source\Runtime\Launch\Private\Windows\LaunchWindows.cpp:268] UE4Editor!__scrt_common_main_seh() [D:\agent\_work\9\s\src\vctools\crt\vcstartup\src\startup\exe_common.inl:288] kernel32 ntdll ``` ---
**Author:** ![Derek\_Burnheim](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/derek_burnheim/32/261_2.png) [@Derek\_Burnheim](https://qa.fmod.com/u/Derek_Burnheim)\ **Post date:** [October 1, 2020, 11:23pm UTC](https://qa.fmod.com/t/issue-with-ue4-25-when-running-the-game-in-editor/16250/2 "2020-10-01T23:23:27Z")
Thanks for reporting this. There is an unchecked pointer dereference at the location where the exception occurred so we will schedule a change to add a null check. We would not have expected that pointer could be null though so I’d be curious to know more about this crash if it’s possible. Are you able to provide any more information about steps to reproduce the crash? ---
**Author:** ![EpicNav](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@EpicNav](https://qa.fmod.com/u/EpicNav)\ **Post date:** [October 2, 2020, 3:52am UTC](https://qa.fmod.com/t/issue-with-ue4-25-when-running-the-game-in-editor/16250/3 "2020-10-02T03:52:09Z")
Just followed the steps from docs. ---
**Author:** ![EpicNav](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@EpicNav](https://qa.fmod.com/u/EpicNav)\ **Post date:** [October 2, 2020, 4:28pm UTC](https://qa.fmod.com/t/issue-with-ue4-25-when-running-the-game-in-editor/16250/4 "2020-10-02T16:28:16Z")
I enabled the plugin, added the dependency to build.cs. after building successfully when I ran the UE4 Editor and pressed play. That’s when I get the crash. no other steps taken. Also I am using the UE4.25 SpatialOS Build. I don’t think this would matter but just wanted to let you know. ---
**Author:** ![Derek\_Burnheim](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/derek_burnheim/32/261_2.png) [@Derek\_Burnheim](https://qa.fmod.com/u/Derek_Burnheim)\ **Post date:** [October 4, 2020, 11:08pm UTC](https://qa.fmod.com/t/issue-with-ue4-25-when-running-the-game-in-editor/16250/5 "2020-10-04T23:08:31Z")
Thanks for the additional information. I haven’t been able to reproduce the issue but from the crash dump it seems certain that the unchecked pointer dereference is at fault. We’ve added a fix for that to our integration in 2.00.13 and 2.01.05, which are currently in QA pending release. I don’t believe there is a workaround here. If you are working with a C++ project and feel comfortable making a change to the FMOD UE4 plugin source it’s a very simple fix which you could apply yourself. In the file `Plugins\FMODStudio\Source\FMODStudio\Private\FMODStudioModule.cpp`, in the function `FFMODStudioModule::UpdateListeners` change lines 846 and 847 from this: ```auto UGameViewportClient *GameViewport = PieContext.GameViewport; UpdateWorldListeners(GameViewport->GetWorld(), &ListenerIndex); ``` to this: ```auto if (PieContext.GameViewport) { UpdateWorldListeners(PieContext.GameViewport->GetWorld(), &ListenerIndex); } ``` If you’re unable to modify the plugin source code and the issue is blocking you then the best option would be to rollback to the FMOD UE4 integration for 2.00.11 or 2.01.03. ---
**Author:** ![EpicNav](https://avatars.discourse-cdn.com/v4/letter/e/8baadc/32.png) [@EpicNav](https://qa.fmod.com/u/EpicNav)\ **Post date:** [October 5, 2020, 10:23am UTC](https://qa.fmod.com/t/issue-with-ue4-25-when-running-the-game-in-editor/16250/6 "2020-10-05T10:23:03Z")
Thanks a lot @Darek really appreciate the help.