Unreal Engine 4 Crash

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

UE4Editor_CoreUObject!UObjectBaseUtility::GetName() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\public\uobject\uobjectbaseutility.h:346]
UE4Editor_BuildingEscape!UOpenDoor::UOpenDoor() [c:\users\adamj\documents\unreal course\section_03\buildingescape\source\buildingescape\opendoor.cpp:17]
UE4Editor_CoreUObject!UClass::CreateDefaultObject() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:2664]
UE4Editor_CoreUObject!UObjectLoadAllCompiledInDefaultProperties() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:745]
UE4Editor_CoreUObject!ProcessNewlyLoadedUObjects() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:821]
UE4Editor_CoreUObject!TBaseStaticDelegateInstance<void __cdecl(void)>::ExecuteIfSafe() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:1018]
UE4Editor_Core!TBaseMulticastDelegate<void>::Broadcast() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\public\delegates\delegatesignatureimpl.inl:922]
UE4Editor_Core!FModuleManager::LoadModuleWithFailureReason() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\core\private\modules\modulemanager.cpp:466]
UE4Editor_Projects!FModuleDescriptor::LoadModulesForPhase() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\projects\private\moduledescriptor.cpp:409]
UE4Editor_Projects!FProjectManager::LoadModulesForProject() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\projects\private\projectmanager.cpp:53]
UE4Editor!FEngineLoop::LoadStartupModules() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2236]
UE4Editor!FEngineLoop::PreInit() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:1668]
UE4Editor!GuardedMain() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\launch.cpp:113]
UE4Editor!GuardedMainWrapper() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\build\++ue4+release-4.14+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:264]
kernel32
ntdll