Nav Mesh Bounds Volume - crash when adding to scene

Development World Creation
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1

Hello,

I got this issue where game crashes when I try to use Nav Mesh Bounds Volumes. When either dragging component and holding it over scene window, or placing it in scene list, it happens.

This is in Unreal 4.4.3 and it does not happen when I try it in a fresh project. Any ideas what could cause this?

Assertion failed: GetWorld()->GetNavigationSystem() != NULL [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.4\Engine\Source\Runtime\Engine\Private\NavMeshBoundsVolume.cpp] [Line: 46]

Stack:
Address = 0x2deb5216 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0x2dd38615 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0x20f63acf (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Engine.dll]
Address = 0x2d9d3009 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-CoreUObject.dll]
Address = 0x1ff56ad9 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1ff8ab31 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1ff561aa (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1f926ee5 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1f8c5462 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1fabca11 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1face287 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1facd5a9 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-UnrealEd.dll]
Address = 0x1baf7b9d (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-LevelEditor.dll]
Address = 0x1bb27b9f (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-LevelEditor.dll]
Address = 0x2d393318 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Slate.dll]
Address = 0x2d381860 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Slate.dll]
Address = 0x2de23284 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0x2de0f871 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0x2de2461e (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0x2de0c6e2 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Core.dll]
Address = 0x4f2f2434 (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0x4f2f2297 (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0x2de24ac6 (filename not found) [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor-Core.dll]
FEngineLoop::Tick() 0x3025708d + 8 bytes [File=d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\launchengineloop.cpp:2080] [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor.exe]
GuardedMain() 0x3024ca3c + 0 bytes [File=d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\launch.cpp:133] [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor.exe]
GuardedMainWrapper() 0x3024caaa + 5 bytes [File=d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\windows\launchwindows.cpp:125] [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor.exe]
WinMain() 0x302588c9 + 17 bytes [File=d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\windows\launchwindows.cpp:201] [in C:\Program Files\Unreal Engine\4.4\Engine\Binaries\Win64\UE4Editor.exe]
__tmainCRTStartup() 0x302596f9 + 21 bytes [File=f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618] [in C:\Program Files\Unreal Engine\4.4\Eng

2

I have same problem. I believe its related to sizing/placing a nav mesh bounds with auto create nav generation turned on.

Try turning off Nav mesh rebuilding and auto create before moving/sizing nav mesh bounds. That seemed to be my issue :slight_smile:

3

Hey Daniel,

Please and attach crash logs and dump file for project when it crashes so we can take a look. You can find information about how to get those files here:

Then check out Devero’s solution below and see if that works for you, and let us know either way. Thanks!

4

Hey Daniel,

We haven’t heard back from you in a few days, so I am marking this post as resolved for tracking purposes and accepting Devero’s answer as correct. If that solution does not work for you and you can provide us with requested logs, we will look into it further. Thanks!