The editor crashes after a few minutes

I think the main error is Object is not packaged: None Nonebut I am not sure how I would fix this.

MachineId:969590D54330955B0D212C8A9D184A9B
EpicAccountId:0d2b19b83f54447d9d01ddc1dff30dfb

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

Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectGlobals.cpp] [Line: 1639] 
Object is not packaged: None None

KERNELBASE + 37901 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!FMsg::Logf__VA() + 463 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:526]
UE4Editor_CoreUObject!StaticAllocateObjectErrorTests() + 941 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1639]
UE4Editor_CoreUObject!StaticAllocateObject() + 197 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1688]
UE4Editor_CoreUObject!UClass::CreateDefaultObject() + 319 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\class.cpp:2502]
UE4Editor_CoreUObject!FObjectInitializer::CreateDefaultSubobject() + 569 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:2644]
UE4Editor_CoreUObject!UObject::CreateDefaultSubobject() + 419 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\obj.cpp:62]
UE4Editor_Surf_5687!ASurfCharacter::ASurfCharacter() + 259 bytes [e:\unreal\surf\source\surf\surfcharacter.cpp:24]
UE4Editor_CoreUObject!StaticConstructObject() + 1444 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:2232]
UE4Editor_CoreUObject!UClass::HotReloadPrivateStaticClass() + 397 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\class.cpp:3368]
UE4Editor_Surf_5687!GetPrivateStaticClassBody<ASurfCharacter>() + 284 bytes [d:\program files\unreal engine\4.7\engine\source\runtime\coreuobject\public\uobject\class.h:2279]
UE4Editor_Surf_5687!TClassCompiledInDefer<ASurfCharacter>::Register() + 49 bytes [d:\program files\unreal engine\4.7\engine\source\runtime\coreuobject\public\uobject\uobjectbase.h:295]
UE4Editor_CoreUObject!UClassRegisterAllCompiledInClasses() + 176 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:690]
UE4Editor_CoreUObject!ProcessNewlyLoadedUObjects() + 11 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:808]
UE4Editor_CoreUObject!TBaseStaticDelegateInstance<void __cdecl(void)>::ExecuteIfSafe() + 7 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\delegates\delegateinstancesimpl_variadics.inl:921]
UE4Editor_Core!TBaseMulticastDelegate<void>::Broadcast() + 149 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\delegates\delegatesignatureimpl_variadics.inl:1030]
UE4Editor_Core!FModuleManager::LoadModuleWithFailureReason() + 2194 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\modules\modulemanager.cpp:359]
UE4Editor_Core!FModuleManager::LoadModule() + 56 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\modules\modulemanager.cpp:238]
UE4Editor_HotReload!FHotReloadModule::DoHotReloadInternal() + 648 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\developer\hotreload\private\hotreload.cpp:654]
UE4Editor_HotReload!FHotReloadModule::DoHotReloadFromIDE() + 1660 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\developer\hotreload\private\hotreload.cpp:1059]
UE4Editor_HotReload!FHotReloadModule::Tick() + 112 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\developer\hotreload\private\hotreload.cpp:995]
UE4Editor!FTicker::Tick() + 698 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\containers\ticker.h:90]
UE4Editor!FEngineLoop::Tick() + 6356 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:2352]
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]

Seems to be the same error as [4.7p8 Crash]Object is not packaged: None None - C++ - Unreal Engine Forums

You mention it’s the same crash as the one in this link:

Is your project a C++ project? Does this crash occur after hot-reloading? I’m not sure I see the connection between that post and your crash.

Hi maikklein,

We haven’t heard back from you in a while, so I’m resolving this post for tracking purposes. If you’re still experiencing this crash, please feel free to comment here with the details requested above and we can continue investigating. Thanks!