Access violation - code c0000005 (first/second chance not available)

Development Programming & Scripting Blueprint
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1

Here is the error message. This happens when I shoot and the bullet hits the bad guy. This does not happen every time. Maybe around 1/10 times it crashes. Please please help! I already tried upgraded this project from 4.7 to 4.8 and that did not help.

MachineId:D39022254C0586E8C1E268B7E9829F81
EpicAccountId:7365af26a30640b397a16fc2534c1e70

Access violation - code c0000005 (first/second chance not available)

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UE4Editor_Engine!FInterpolateComponentToAction::UpdateOperation() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\interpolatecomponenttoaction.h:115]
UE4Editor_Engine!FLatentActionManager::TickLatentActionForObject() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\latentactionmanager.cpp:139]
UE4Editor_Engine!FLatentActionManager::ProcessLatentActions() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\latentactionmanager.cpp:77]
UE4Editor_Engine!AActor::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\actor.cpp:684]
UE4Editor_Engine!APawn::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\pawn.cpp:706]
UE4Editor_Engine!AActor::TickActor() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\actor.cpp:670]
UE4Editor_Engine!FActorTickFunction::ExecuteTick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\actor.cpp:105]
UE4Editor_Engine!FTickTaskSequencer::FTickFunctionTask::DoTask() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ticktaskmanager.cpp:113]
UE4Editor_Engine!TGraphTask::ExecuteTask() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\public\async\taskgraphinterfaces.h:753]
UE4Editor_Core!FTaskThread::ProcessTasks() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\async\taskgraph.cpp:430]
UE4Editor_Core!FTaskThread::ProcessTasksUntilQuit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\async\taskgraph.cpp:273]
UE4Editor_Core!FTaskGraphImplementation::WaitUntilTasksComplete() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\async\taskgraph.cpp:991]
UE4Editor_Engine!FTickTaskSequencer::ReleaseTickGroup() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ticktaskmanager.cpp:243]
UE4Editor_Engine!FTickTaskManager::RunTickGroup() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ticktaskmanager.cpp:643]
UE4Editor_Engine!UWorld::RunTickGroup() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\leveltick.cpp:697]
UE4Editor_Engine!UWorld::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\leveltick.cpp:1181]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorengine.cpp:1339]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealedengine.cpp:366]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2355]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]

2

Sorry but we won’t be able to help us without you posting some code. Unless you want to hear the answer is 42. Which it is.

3

This is the blueprint for the collision with the bullet.

4

I’m seriously only guessing, but maybe it’s the calls to DestroyActor? Is it possible that some process is trying to access it after the DestroyActor call?

Maybe check out this post:

There are a couple other posts on the DestroyActor and the garbage collector, maybe you can find something there?

I would double check that, after your second call to DestroyActor, you continue running the blueprint script - maybe try putting it after you spawn the health item…?

5

That’s a good thought. I try removing the stuff after I destroy actor to see if it still crashes. Appreciate the input. I’ll update the results on Thursday evening.

6

If it doesn’t work, and in case you don’t happen to have thought of it, you can break for exceptions in the VS debugger by going to Debug->Exceptions, then turn on all exceptions. Then when it tries to access that memory, you may be able to drill down to what object it’s trying to access that isn’t there

7

I finally found the source of the issue. It is because of the information after the destroy actor. Thanks for the help. I’ll mark this as solved.
i think i marked it solved. If not, oh well