Engine kept crashing when cooking assets for ios

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1

Engine kept crashing when Lauching level on ios ( from Windows Editor )

It crashes when cooking normal assets : static mesh, texture, materials. I can’t see anything wrong with the assets that causing the crash.

Here are the error log ( it looks like to do with navigation though, which is weird.)

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

"Assertion failed: NavSys [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\Engine\Private\AI\Navigation\RecastNavMeshGenerator.cpp] [Line: 3348]
"

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:355]
UE4Editor_Engine!FRecastNavMeshGenerator::TickAsyncBuild() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:3349]
UE4Editor_Engine!ANavigationData::TickAsyncBuild() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\navigationdata.cpp:490]
UE4Editor_Engine!UNavigationSystem::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\navigationsystem.cpp:763]
UE4Editor_Engine!UWorld::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\leveltick.cpp:1152]
UE4Editor_UnrealEd!UEditorEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorengine.cpp:1134]
UE4Editor_UnrealEd!UUnrealEdEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealedengine.cpp:366]
UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2359]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]

2

Can you try a File|Package build to see if that works? You may have just discovered a previously unknown bug with launch on. If the File|Package for IOS works then that will help us narrow down where to look for it.

-Pete

3

Hey Xin,

I have not heard from you in quite a few days and for that reason, I will be closing this thread as resolved at this time. However, if you have any further questions regarding this topic, do not hesitate in replying back as your comment will open this thread back up for additional assistance.

Thank you and have a nice day!