Unreal Engine Crashes When I try to Run the Game

Development Pipeline & Plugins Editor Scripting
1

I’m not sure if I’m putting this in the right category. Sorry if it’s in the wrong place.

I’m doing an assignment for my class, and for some reason, when I click the “play” button to run the game, Unreal crashes and doesn’t give me an error why. Has anyone else ever had this problem?

Below is the last few lines of the log file:

[2026.05.26-14.30.25:268][541]LogLoad: Game class is ‘GAM312_GameModeBase_C’
[2026.05.26-14.30.25:278][541]LogWorld: Bringing World /Game/Maps/UEDPIE_0_testMap.testMap up for play (max tick rate 0) at 2026.05.26-10.30.25
[2026.05.26-14.30.25:279][541]LogWorld: Bringing up level for play took: 0.011511
[2026.05.26-14.30.25:286][541]LogOnline: OSS: Created online subsystem instance for: :Context_1
[2026.05.26-14.30.30:393][541]LogWindows: Error: === Critical error: ===
[2026.05.26-14.30.30:393][541]LogWindows: Error:
[2026.05.26-14.30.30:393][541]LogWindows: Error: Fatal error!
[2026.05.26-14.30.30:393][541]LogWindows: Error:
[2026.05.26-14.30.30:393][541]LogWindows: Error: Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x00000000000005e0
[2026.05.26-14.30.30:393][541]LogWindows: Error:
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe28831d88 UnrealEditor-Engine.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe27f04c1f UnrealEditor-Engine.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe2a0cabdf UnrealEditor-Engine.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe28b766f1 UnrealEditor-Engine.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe29e17668 UnrealEditor-Engine.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe28b10e0a UnrealEditor-Engine.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe12a19a6e UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe12a40f7d UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe12a1a7df UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe12a57f24 UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe12a5be01 UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe12a5b4be UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe123b74a1 UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ffe12f0e396 UnrealEditor-UnrealEd.dll!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ff798f74da6 UnrealEditor.exe!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ff798f90bfe UnrealEditor.exe!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ff798f90d0a UnrealEditor.exe!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ff798f94590 UnrealEditor.exe!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ff798fa5be4 UnrealEditor.exe!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007ff798fa8f9a UnrealEditor.exe!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error: [Callstack] 0x00007fff79e7e957 KERNEL32.DLL!UnknownFunction
[2026.05.26-14.30.30:393][541]LogWindows: Error:
[2026.05.26-14.30.30:458][541]LogExit: Executing StaticShutdownAfterError
[2026.05.26-14.30.30:460][541]LogWindows: FPlatformMisc::RequestExit(1, LaunchWindowsStartup.ExceptionHandler)
[2026.05.26-14.30.30:460][541]LogWindows: FPlatformMisc::RequestExitWithStatus(1, 3, LaunchWindowsStartup.ExceptionHandler)
[2026.05.26-14.30.30:460][541]LogCore: Engine exit requested (reason: Win RequestExit)

2

Hello there @DigitalSketch !

No worries, that’s a quite common crash you are getting, there are quite a few ways to handle it. What you are seeing is an EXCEPTION_ACCESS_VIOLATION, which means that something in your project tried to acces an element that was either not ready, or missing, thus crashing the whole thing. Since it happens as soon as you hit start, it’s most likely happening during your play events.

From your log extract, the crash is aiming at “GAM312_GameModeBase_C”, so I would start there. Open the blueprint, check the event graph, and loog for any play events on startup that could be having problems. For example, ensure that all variables have something assigned. If any element in use as “None” set, and your code tries to use it, that’s a crash. Do the same for your actors in level, go through each blueprint tied to them, and check their play events.

Now, if the issue persists after you made any corrections, then what we will need here is full context of the crash. For that, we need the full crash log. Crash reports from the editor are stored on your local machine in your project’s Saved/Crashes folder, or they can also be found on your local machine, in C:\Users[Your Windows Username]\AppData\Local[Project Name]\Saved\Crashes. Once you locate the file, attach it to the thread, or upload it to Drive, then link it here.

3

There was no play in the Game Mode Base, and I removed everything from the scene except the player and it still happens. I’m not sure what you need from the crashes, so I zipped up the contents of the folder and added it.

UECC-Windows-E24723F2464DABD0CD69219E3B9FBE7D_0000.zip (628.7 KB)