Crash on Import Unreal

[danouche93]

Hey, I did a new topic because I have now a problem with Unreal, I use 4.21 version. When I try to Import the .json file to Unreal, it crashes and I get this error :

LoginId:f72b7e044e602f24b32ffea98818406c EpicAccountId:113b31dff299415bac6058a219062d14

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Containers/Array.h] [Line: 611] Array index out of bounds: 0 from an array of size 0

KERNELBASE UE4Editor_Core UE4Editor_Core UE4Editor_Core UE4Editor_MeshDescriptionOperations UE4Editor_MeshBuilder UE4Editor_MeshBuilder UE4Editor_MeshBuilder UE4Editor_Engine UE4Editor_Engine UE4Editor_Engine UE4Editor_ExodusImport!MeshBuilder::setupStaticMesh() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\meshbuilder\staticmesh.cpp:163] UE4Editor_ExodusImport!std::_Func_impl_no_alloc<,void,UStaticMesh *>::_Do_call() [c:\program files (x86)\microsoft visual studio\2017\community\vc\tools\msvc\14.16.27023\include\functional:15732480] UE4Editor_ExodusImport!::operator()() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\unrealutilities.h:141] UE4Editor_ExodusImport!UnrealUtilities::createAssetPackage() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\unrealutilities.cpp:19] UE4Editor_ExodusImport!UnrealUtilities::createAssetObject() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\unrealutilities.h:146] UE4Editor_ExodusImport!JsonImporter::importMesh() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\jsonimporter\mesh.cpp:125] UE4Editor_ExodusImport!JsonImporter::loadMeshes() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\jsonimporter.cpp:171] UE4Editor_ExodusImport!JsonImporter::importProject() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\jsonimporter\scene.cpp:149] UE4Editor_ExodusImport!FJsonImportModule::PluginImportButtonClicked() [e:\shenkar\unreal engine\myproject\plugins\exodusimport\source\exodusimport\private\jsonimport.cpp:143] UE4Editor_ExodusImport!TBaseRawMethodDelegateInstance<0,FJsonImportModule,void __cdecl(void)>::ExecuteIfSafe() [e:\ue_4.21\engine\source\runtime\core\public\delegates\delegateinstancesimpl.h:518] UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_Slate UE4Editor_ApplicationCore UE4Editor_ApplicationCore UE4Editor_ApplicationCore UE4Editor_ApplicationCore user32 user32 UE4Editor_ApplicationCore UE4Editor UE4Editor UE4Editor UE4Editor UE4Editor kernel32 ntdll

I tried remove all the assets I had in the scene, also the colliders, but it still happens.

[NegInfinity]

Hi.

It looks like you hit a bug. I need a test data that causes that error, preferably something that is not copyrighted.

If you could either send me the exported files via email, or upload them somewhere, that would be great.

Hard to proceed without that.

Alternativley, let me know what asset have you tried to export and whether this happens when you work with a plain scene with basic shapes.

For example, take a look at installation videos, they depict basic test scene:

https://www.youtube.com/watch?v=z6Iy0QAuO2o

Try to make something similar, export it, and if it still fails to import, send or upload exported *.json files so I can take a look at them..

[danouche93]

Okay, I figured out what caused the problem, it was a object that I removed in the scene. Now I succeeded to import the asset in Unreal but you can't see any object in the scene ... I can see that the object have the texture and everything but I can't see it in the scene, it's really weird Project 3ds max to UE.zip Here is the .json file that I used to import to unreal, tell me if it works for you..

[danouche93]

Here is the link with all the asset : https://drive.google.com/file/d/1JqHrrZ05vlEPW1AfuBmAysBSntUbFSn6/view?usp=sharing

[NegInfinity]

Hi.

Sorry for slow reply.

I've imported the project and the scene seemingly imports without problem, along with terrain.

However, due to the way terrain import works, when you import a scene with terrain, it is not imported into the current scene, and instead a new scene file, which is by default within /Import// , where can be "unnamed scenes" if you exported it thorugh the "exprot scene" menu.

You should see a warning about that when it happens. It looks like this:

And then when import is finished you get this:

Basically, you're supposed to wait for shader compilation to finish and then head to the path you saw. In your case it woudl be here: