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Adding navmesh results in crash

When attempting to add a navmesh to my level for AI navigation, my editor crashes with "GetWorld()->GetNavigationSystem() != NULL"

I understand this is using the preview build, but I attempted to add a navmesh using 4.2.1, and I was greeted with the same crash.

This does not happen on other levels, and is not related to any actor in specific, as I've deleted everything in the scene, and tried to add a navmesh with the same result. Interestingly, when I delete everything in my scene, my level is still over 8mb.


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

Assertion failed: GetWorld()->GetNavigationSystem() != NULL [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.3\Engine\Source\Runtime\Engine\Private\NavMeshBoundsVolume.cpp] [Line: 46]

KERNELBASE + 37901 bytes UE4Editor_Core + 3009475 bytes UE4Editor_Core + 1775818 bytes UE4Editor_Core + 1703552 bytes UE4Editor_Engine + 5526479 bytes UE4Editor_CoreUObject + 1104793 bytes UE4Editor_UnrealEd + 7320377 bytes UE4Editor_UnrealEd + 7585585 bytes UE4Editor_UnrealEd + 7318007 bytes UE4Editor_UnrealEd + 922436 bytes UE4Editor_UnrealEd + 622159 bytes UE4Editor_UnrealEd + 2694373 bytes UE4Editor_UnrealEd + 2755183 bytes UE4Editor_UnrealEd + 2749562 bytes UE4Editor_LevelEditor + 1712377 bytes UE4Editor_LevelEditor + 1761087 bytes UE4Editor_Slate + 636184 bytes UE4Editor_Slate + 586854 bytes UE4Editor_Core + 2986092 bytes UE4Editor_Core + 2919905 bytes UE4Editor_Core + 2990975 bytes UE4Editor_Core + 2908930 bytes user32 + 105425 bytes user32 + 104666 bytes UE4Editor_Core + 2991990 bytes UE4Editor!FEngineLoop::Tick() + 2990 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\launch\private\launchengineloop.cpp:2061] UE4Editor!GuardedMain() + 476 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\launch\private\launch.cpp:133] UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\launch\private\windows\launchwindows.cpp:125] UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.3\engine\source\runtime\launch\private\windows\launchwindows.cpp:207] UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

Product Version: Not Selected
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asked Jul 15 '14 at 01:05 AM in Bug Reports

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Thank you for your report. We were not able to investigate this on the engine version you reported, but there have been many version changes to UE4 since this question was first posted. With a new version of the Engine comes new fixes and it is possible that this issue has changed or may no longer occur. Due to timetable of when this issue was first posted, we are marking this post as resolved for tracking purposes.

If you are still experiencing the issue you reported in the current engine version, then please respond to this message with additional information and we will investigate as soon as possible. If you are experiencing a similar, but different issue at this time, please submit a new report for it.

Thank you

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answered Oct 03 '14 at 03:00 PM

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