UE4 Keeps crashing (Current Build)

I think the issue is a BP Actor that I have placed. It might be bad coding, but I just want to make sure!

**MachineId:8DB8A2D041B87A62FD9A099B221149B5
EpicAccountId:cadf0931aa3d493aa662a466e66fc52f

Unknown exception - code 00000001 (first/second chance not available)

Assertion failed: ((UObject*)ContainerPtr)->IsA((UClass*)GetOuter()) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\CoreUObject\Public\UObject\UnrealType.h] [Line: 357]
‘Item_Marker_BP_C_1’ is of class 'Item_Mark

KERNELBASE + 35740 bytes
UE4Editor_Core!FOutputDeviceWindowsError::Serialize() + 292 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor_Core!FOutputDevice::Logf__VA() + 248 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:144]
UE4Editor_Core!FDebug::AssertFailed() + 1079 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:224]
UE4Editor_CoreUObject!UObject::execInstanceVariable() + 488 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:975]
UE4Editor_CoreUObject!UObject::ProcessContextOpcode() + 141 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1451]
UE4Editor_CoreUObject!UObject::execPopExecutionFlowIfNot() + 75 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:1204]
UE4Editor_CoreUObject!UObject::ProcessInternal() + 1644 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:602]
UE4Editor_CoreUObject!UObject::CallFunction() + 2707 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:516]
UE4Editor_CoreUObject!UObject::ProcessInternal() + 1644 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:602]
UE4Editor_CoreUObject!UFunction::Invoke() + 180 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\class.cpp:3684]
UE4Editor_CoreUObject!UObject::ProcessEvent() + 3036 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\scriptcore.cpp:924]
UE4Editor_UMG!UUserWidget::Tick() + 131 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\intermediate\build\win64\inc\umg\umg.generated.cpp:1054]
UE4Editor_UMG!UUserWidget::NativeTick() + 588 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\umg\private\userwidget.cpp:592]
UE4Editor_SlateCore!SWidget::Paint() + 915 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:638]
UE4Editor_UMG!SConstraintCanvas::OnPaint() + 295 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\umg\private\slate\sconstraintcanvas.cpp:165]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SOverlay::OnPaint() + 565 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SPanel::PaintArrangedChildren() + 588 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\spanel.cpp:45]
UE4Editor_SlateCore!SPanel::OnPaint() + 140 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\spanel.cpp:24]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_Slate!SScissorRectBox::OnPaint() + 469 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slate\private\widgets\layout\sscissorrectbox.cpp:66]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SOverlay::OnPaint() + 565 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() + 1153 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:30]
UE4Editor_Slate!SViewport::OnPaint() + 626 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slate\private\widgets\sviewport.cpp:82]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() + 1153 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:30]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_Slate!SCanvas::OnPaint() + 298 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slate\private\widgets\scanvas.cpp:117]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SOverlay::OnPaint() + 565 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\soverlay.cpp:102]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SCompoundWidget::OnPaint() + 1153 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\scompoundwidget.cpp:30]
UE4Editor_SlateCore!SWidget::Paint() + 1005 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swidget.cpp:639]
UE4Editor_SlateCore!SWindow::PaintWindow() + 54 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slatecore\private\widgets\swindow.cpp:1660]
UE4Editor_Slate!FSlateApplication::DrawWindowAndChildren() + 596 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:927]
UE4Editor_Slate!FSlateApplication::PrivateDrawWindows() + 1473 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1107]
UE4Editor_Slate!FSlateApplication::Tick() + 2879 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1323]
UE4Editor!FEngineLoop::Tick() + 4447 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:2284]
UE4Editor!GuardedMain() + 1404 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]**

Hi liondog,

Can you post your crash logs? These can be found at \Unreal Projects\PROJECTNAME\saved\logs\ . Additionally, what steps did you take before the crash occurred?

Hi liondog,

We have not heard from you in a few days. I am marking this thread as answered for tracking purposes. If you are still experiencing this error, please comment with the requested information. Thank you!