Game Started Crashing in Standalone Editor

Hi, I have been solo developing this game for last two years and it has suddenly started crashing when go to play in standalone editor, i thought this had to do with adding in game instance/save game object and all logic with that was recently added, but it appears removing it solved nothing, i am turning yet again to you fine people to see if anyone can please help me use the (below) call stack error log to identify the problem(s)? After thorough reading I am thinking it may be an asset/plugin/or config setting causing the problem but i really don’t know. Even if someone could help point me in the direction of using the below info to solve the issue, it would be greatly appreciated. Please help! Thank you!

Device: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: ReferencingPin->LinkedTo.Num() > PinData.ArrayIdx [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/EdGraph/EdGraphPin.cpp] [Line: 1733]
LogOutputDevice: Error: Stack:
LogOutputDevice: Error: [Callstack] 0x00007ffc841aa1e9 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f7d3e7 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f80ed7 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81acf UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81e97 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b97e8 UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b9c4a UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5383426 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54ad9d0 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5498037 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bd490 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bc410 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a5491d UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a95015 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a9478c UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92810689 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92bea14e UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc934c37e6 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb37800 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4ba7c UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4bb5a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb5e31d UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb6145a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd37967034 KERNEL32.DLL!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd39602651 ntdll.dll!UnknownFunction []
LogStats: SubmitErrorReport - 0.000 s
LogStats: SendNewReport - 1.452 s
LogStats: FDebug::EnsureFailed - 1.967 s
LogOutputDevice: Warning:

Script Stack (0 frames):

LogStats: FPlatformStackWalk::StackWalkAndDump - 0.001 s
LogOutputDevice: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: CurrentTransaction [File:D:/Build/++UE4/Sync/Engine/Source/Editor/UnrealEd/Private/EditorTransaction.cpp] [Line: 1632]
LogOutputDevice: Error: Stack:
LogOutputDevice: Error: [Callstack] 0x00007ffc937b8d59 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92cad47e UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f7d52a UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f80ed7 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81acf UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81e97 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b97e8 UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b9c4a UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5383426 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54ad9d0 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5498037 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bd490 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bc410 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a5491d UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a95015 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a9478c UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92810689 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92bea14e UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc934c37e6 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb37800 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4ba7c UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4bb5a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb5e31d UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb6145a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd37967034 KERNEL32.DLL!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd39602651 ntdll.dll!UnknownFunction []
LogStats: SubmitErrorReport - 0.000 s
LogStats: SendNewReport - 3.560 s
LogStats: FDebug::EnsureFailed - 3.634 s
LogOutputDevice: Warning:

Script Stack (0 frames):

LogStats: FPlatformStackWalk::StackWalkAndDump - 0.000 s
LogOutputDevice: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: Pin->LinkedTo.Contains(ReferencingPin) || GEditor->Trans->IsObjectTransacting(Pin->GetOwningNode()) [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/EdGraph/EdGraphPin.cpp] [Line: 1750]
LogOutputDevice: Error: Stack:
LogOutputDevice: Error: [Callstack] 0x00007ffc841aa090 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f7d53a UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f80ed7 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81acf UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81e97 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b97e8 UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b9c4a UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5383426 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54ad9d0 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5498037 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bd490 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bc410 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a5491d UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a95015 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a9478c UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92810689 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92bea14e UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc934c37e6 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb37800 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4ba7c UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4bb5a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb5e31d UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb6145a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd37967034 KERNEL32.DLL!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd39602651 ntdll.dll!UnknownFunction []
LogStats: SubmitErrorReport - 0.000 s
LogStats: SendNewReport - 2.569 s
LogStats: FDebug::EnsureFailed - 2.615 s
LogOutputDevice: Warning:

Script Stack (0 frames):

LogStats: FPlatformStackWalk::StackWalkAndDump - 0.000 s
LogOutputDevice: Error: === Handled ensure: ===
LogOutputDevice: Error: Ensure condition failed: Pin->LinkedTo.Contains(ReferencingPin) || GEditor->Trans->IsObjectTransacting(Pin->GetOwningNode()) [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Engine/Private/EdGraph/EdGraphPin.cpp] [Line: 1750]
LogOutputDevice: Error: Stack:
LogOutputDevice: Error: [Callstack] 0x00007ffc841aa090 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f7d53a UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f80ed7 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81acf UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc82f81e97 UE4Editor-Engine.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b97e8 UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc965b9c4a UE4Editor-BlueprintGraph.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5383426 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54ad9d0 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb5498037 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bd490 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffcb54bc410 UE4Editor-CoreUObject.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a5491d UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a95015 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92a9478c UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92810689 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc92bea14e UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffc934c37e6 UE4Editor-UnrealEd.dll!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb37800 UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4ba7c UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb4bb5a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb5e31d UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ff74fb6145a UE4Editor.exe!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd37967034 KERNEL32.DLL!UnknownFunction []
LogOutputDevice: Error: [Callstack] 0x00007ffd39602651 ntdll.dll!UnknownFunction []

Are you using any version control system?
If I were you, I would start by rolling back to the latest stable version and then would try to catch the reason for an issue

I am unsure if project has source control activated but will check, thank you, would this allow me to somehow restore things? (I read a little on it and am still reading)

Your latter suggestion is pretty much what im stuck with, i have a backup a few months ago, a lot of work lost but at least its something, basically my current solution is start adding in all missing blueprints/assets/levels and test more thoroughly this time as i implement and if it starts crashing i know will know what caused the issue, if not maybe i f’d this project up and rebuild is only option, iunno, i have a programmer friend who says he might be able to help but not super hopeful at this point

The bad news is if you don’t know about source control, I strongly recommend that you start using any of them, otherwise you’ll lose a lot of work.
You can use any GIT client and host your code on GitHub for free. It’s not rocket science so it shouldn’t be hard