Build light done + play = crashed and corrupted

Development Rendering
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1

the game run fine, but once i build the light and click play, it’s keep crashing, and corrupting the map. And now i can’t open it anymore (i did a backup before so it’s fine)

that the log

!Id:8959d25192df750b6ecac41297dbb210

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

Assertion failed: TheModel->Nodes.IsValidIndex( NodeIdx ) [File: D :\BuildFarm\buildmachine_++depot+UE4-Releases+4.4\Engine\Source\Runtime\Engine\Private\ModelRender.cpp] [Line: 99]
Invalid Node Index, Idx:2086, Num:207

KERNELBASE + 37901 bytes
UE4Editor_Core + 3095292 bytes
UE4Editor_Core + 1661738 bytes
UE4Editor_Core + 1541824 bytes
UE4Editor_Engine + 5124051 bytes
UE4Editor_Engine + 5314098 bytes
UE4Editor_CoreUObject + 899050 bytes
UE4Editor_Engine + 14259471 bytes
UE4Editor_CoreUObject + 899050 bytes
UE4Editor_CoreUObject + 1329894 bytes
UE4Editor_CoreUObject + 1400728 bytes
UE4Editor_UnrealEd + 2593508 bytes
UE4Editor_UnrealEd + 2540781 bytes
UE4Editor_UnrealEd + 2466449 bytes
UE4Editor_UnrealEd + 5632240 bytes
UE4Editor_UnrealEd + 2959412 bytes
UE4Editor_UnrealEd + 2962229 bytes
UE4Editor_LevelEditor + 1020586 bytes
UE4Editor_Slate + 545350 bytes
UE4Editor_Slate + 1883687 bytes
UE4Editor_Slate + 1920472 bytes
UE4Editor_Slate + 1690972 bytes
UE4Editor_Slate + 2512538 bytes
UE4Editor_Slate + 2748777 bytes
UE4Editor_Slate + 794079 bytes
UE4Editor_Slate + 727433 bytes
UE4Editor_Core + 2503893 bytes
UE4Editor_Core + 2422897 bytes
UE4Editor_Core + 2508318 bytes
UE4Editor_Core + 2410210 bytes
user32 + 105425 bytes
user32 + 104666 bytes
UE4Editor_Core + 2509510 bytes
UE4Editor!FEngineLoop::Tick() + 2877 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\launchengineloop.cpp:2080]
UE4Editor!GuardedMain() + 476 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\windows\launchwindows.cpp:125]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.4\engine\source\runtime\launch\private\windows\launchwindows.cpp:201]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

Reason why ?

2

Hey Ga.rheault -

Can you give me some more information about what is in your level? Are you using BSPs and did you delete one or more directly before building lights or Playing? How are you Playing, in Editor, as Standalone Game? Are you using any Foliage or Instanced Static Meshes in the level, are they created a run time? The Project’s Log file which should be saved in the Saved Sub folder would be very helpful.

If you can answer these questions for me I can continue to try to track this crash down for you.

Thank You

Eric Ketchum

3

I have a normal scene, particle, mesh, blueprint that start the game from a camera, but i think i found the pb, i had a lot of mesh that had a lightmap of 128 and 2k texture. I downgrade the texture and lightmap and now it’s seam ‘‘stable’’

And weirdly, that corrupted map can be open in unreal 4.5 and 4.6, but not 4.4…

4

Hey Ga.rheault -

From your description this is an issue that was found and fixed by 4.5.1 which is why the map can open and run correctly in 4.5 and 4.6.

Thank You -

Eric Ketchum