Just upgraded from 4.18.3 to the 4.19 preview in an attempt to resolve a PhysX crash bug on Android. Inconsistently on loading the second level in the game, the application will crash with the following log:
LogAndroid: Error: === Critical error: ===
LogAndroid: Error:
LogAndroid: Error: Assertion failed: !IsUnreachable() [File:D:\Build++UE4+Release-
4.19+Compile\Sync\Engine\Source\Runtime\CoreUObject\Private\UObject\ScriptCore.cpp] [Line: 1189]
LogAndroid: Error: MotionControllerComponent /Master.Master:PersistentLevel.BP_Player_C_0.MotionController Function: ‘/Script/HeadMountedDisplay.MotionControllerComponent:OnMotionControllerUpdated’
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!StaticFailDebug(wchar_t const*, char const*, int, wchar_t const*, bool) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!FDebug::LogAssertFailedMessageImpl(char const*, char const*, int, wchar_t const*, …) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!UObject::ProcessEvent(UFunction*, void*) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!UMotionControllerComponent::PollControllerState(FVector&, FRotator&, float) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!UMotionControllerComponent::FViewExtension::PreRenderViewFamily_RenderThread(FRHICommandListImmediate&, FSceneViewFamily&) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!FNamedTaskThread::ProcessTasksNamedThread(int, bool) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!FNamedTaskThread::ProcessTasksUntilQuit(int) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!RenderingThreadMain(FEvent*) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!FRenderingThread::Run() []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!FRunnableThreadPThread::Run() []
LogAndroid: Error: [Callstack] 0x0000000000000000 libUE4.so!FRunnableThreadPThread::_ThreadProc(void*) []
LogAndroid: Error: [Callstack] 0x0000000000000000 libc.so []
LogAndroid: Error: [Callstack] 0x0000000000000000 libc.so []
LogAndroid: Error:
LogAndroid: Error:
LogAndroid: Error:
LogAndroid: Error:
Build is UE4.19 binary preview 5 from the launcher.