Unreal Engine Issues

UE-42492

Crash On Launch When Using Leap Motion Character

Crash On Launch When Using Leap Motion Character

Questions & Answers
Description

The editor is crashing on launch when the Leap Motion plugin is enabled and a leap motion character is being used.

This did not occur in 4.14.3. This is a regression.

Steps to Reproduce
  1. Open the editor
  2. Navigate to Edit->Plugins and enable the Leap Motion Plugin
  3. Restart the editor
  4. Create a new blueprint based on LeapMotionRiggedCharacter
  5. Place it in the level
  6. Launch the game using the Launch button

Result: Editor will crash after launch

Expected: No crash would occur on launch

Callstack
LogWindows:Error: Assertion failed: LocalExportIndex.IsNull() [File:D:\Sean.Flint_Z5610_StreamMain\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading.cpp] [Line: 2320]
[2017.03.01-20.23.58:523][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error:
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error:
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error:
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: KERNELBASE.dll!0x00000000692C1F28
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FOutputDeviceWindowsError::Serialize() [d:\sean.flint_z5610_streammain\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:120]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FOutputDevice::Logf__VA() [d:\sean.flint_z5610_streammain\engine\source\runtime\core\private\misc\outputdevice.cpp:70]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FDebug::AssertFailed() [d:\sean.flint_z5610_streammain\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FAsyncPackage::SetupImports_Event() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:2321]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FAsyncPackage::Event_SetupImports() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:2166]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!<lambda_4b13b7971da083fca0975471e749fd15>::operator()() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:2155]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FAsyncLoadEventQueue::PopAndExecute() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloadingthread.h:104]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FAsyncLoadingThread::ProcessAsyncLoading() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:4240]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FAsyncLoadingThread::TickAsyncThread() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:4838]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FAsyncLoadingThread::TickAsyncLoading() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:4595]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FlushAsyncLoading() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:6654]
[2017.03.01-20.23.58:524][301]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!LoadPackageInternalInner() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1152]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!LoadPackageInternal() [d:\sean.flint_z5610_streammain\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1475]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!UEngine::LoadMap() [d:\sean.flint_z5610_streammain\engine\source\runtime\engine\private\unrealengine.cpp:10070]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!UEngine::Browse() [d:\sean.flint_z5610_streammain\engine\source\runtime\engine\private\unrealengine.cpp:9542]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!UGameInstance::StartGameInstance() [d:\sean.flint_z5610_streammain\engine\source\runtime\engine\private\gameinstance.cpp:421]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!FEngineLoop::Init() [d:\sean.flint_z5610_streammain\engine\source\runtime\launch\private\launchengineloop.cpp:2572]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!GuardedMain() [d:\sean.flint_z5610_streammain\engine\source\runtime\launch\private\launch.cpp:155]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!GuardedMainWrapper() [d:\sean.flint_z5610_streammain\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!WinMain() [d:\sean.flint_z5610_streammain\engine\source\runtime\launch\private\windows\launchwindows.cpp:210]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: MyProject11.exe!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253]
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: KERNEL32.DLL!0x000000006C978102
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: ntdll.dll!0x000000006CB3C5B4
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error: ntdll.dll!0x000000006CB3C5B4
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:522][  0]LogWindows:Error:
[2017.03.01-20.23.58:861][302]LogPlayLevel: MyProject11: [2017.03.01-20.23.58:523][  0]LogWindows:Error: end: stack for UAT

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Won't Do
ComponentUE - Platform - XR
Affects Versions4.15, 4.16
Target Fix4.18
CreatedMar 1, 2017
ResolvedSep 15, 2017
UpdatedOct 4, 2017