[bug]Assertion Failed during Static Mesh Import

Development Asset Creation
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1

In the September build I have tried to import my city, which is divided into something like 20 chunks, each under the old poly limit, which as I understand should be no longer relevant - but I say this because previously I was able to import the exact same work into UDK/UE3 just fine.

Beyond meshes, the FBX includes several PNG textures, which are not power of 2, it is a binary FBX 2013 file. Meshes are triangulated. I have tried a few different import options for calculating normals and tangents. Each time, I receive the following log and a crash:

Assertion failed: (Index >= 0) & ((Index < ArrayNum) | ((Index == 0) & (ArrayNum==0) )) [File:D:\BuildFarm\buildmachine_++depot+UE4-Rocket+Beta4\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 523]
Array index out of bounds: 65 from an array of size 65
Stack:
Address = 0xdc1693a6 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc069b6a (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xd2a5fe5b (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-MeshUtilities.dll]
Address = 0xd2a5e8ac (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-MeshUtilities.dll]
Address = 0xd9c005a6 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Engine.dll]
Address = 0xd9c008af (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Engine.dll]
Address = 0xd9bfbd36 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Engine.dll]
Address = 0xd80c5718 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd80c3582 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd8068e2a (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e259 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd80616a4 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd8076d0a (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd0144484 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-AssetTools.dll]
Address = 0xd0143054 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-AssetTools.dll]
Address = 0xcee15208 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-ContentBrowser.dll]
Address = 0xcee0f1ef (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-ContentBrowser.dll]
Address = 0xcee1510a (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-ContentBrowser.dll]
Address = 0xd8cd05ff (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8cd3ee8 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8cb80bc (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8a9c2aa (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8abf36e (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8b31f86 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8b2a6b1 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xdc148bfc (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc13acca (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc149556 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc1368d2 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x77479bd1 (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0x774798da (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0xdc16e559 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc149beb (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x3f435e64 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f42cb8c (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f42cbfa (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f43772b (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f4383c3 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x76ff652d (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x7758c521 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x7758c521 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]

Address = 0xfdd2cacd (filename not found) [in C:\Windows\system32\KERNELBASE.dll]
Address = 0xdc16765b (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc082484 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc069c0f (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xd2a5fe5b (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-MeshUtilities.dll]
Address = 0xd2a5e8ac (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-MeshUtilities.dll]
Address = 0xd9c005a6 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Engine.dll]
Address = 0xd9c008af (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Engine.dll]
Address = 0xd9bfbd36 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Engine.dll]
Address = 0xd80c5718 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd80c3582 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd8068e2a (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e259 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd806e2f0 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd80616a4 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd8076d0a (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-UnrealEd.dll]
Address = 0xd0144484 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-AssetTools.dll]
Address = 0xd0143054 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-AssetTools.dll]
Address = 0xcee15208 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-ContentBrowser.dll]
Address = 0xcee0f1ef (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-ContentBrowser.dll]
Address = 0xcee1510a (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-ContentBrowser.dll]
Address = 0xd8cd05ff (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8cd3ee8 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8cb80bc (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8a9c2aa (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8abf36e (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8b31f86 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xd8b2a6b1 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Slate.dll]
Address = 0xdc148bfc (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc13acca (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc149556 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc1368d2 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x77479bd1 (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0x774798da (filename not found) [in C:\Windows\system32\USER32.dll]
Address = 0xdc16e559 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0xdc149beb (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor-Core.dll]
Address = 0x3f435e64 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f42cb8c (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f42cbfa (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f43772b (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x3f4383c3 (filename not found) [in C:\Program Files\Rocket\Engine\Binaries\Win64\RocketEditor.exe]
Address = 0x76ff652d (filename not found) [in C:\Windows\system32\kernel32.dll]
Address = 0x7758c521 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]
Address = 0x7758c521 (filename not found) [in C:\Windows\SYSTEM32\ntdll.dll]

I notice the array out of range line and it causes me to wonder if there is some kind of new limitation on how many assets can be imported per FBX?

2

I notice the array out of range line and it causes me to wonder if there is some kind of new limitation on how many assets can be imported per FBX?

I don’t think that’s the problem. I imported an FBX with 25 parts a couple of weeks ago with no problem.

3

Hi Henrik,

I have a few questions for you:

  • What software did you use to export the FBX?
  • Have you attempted to re-export the FBX using different settings? (what is your result?)
  • Have you tried exporting/importing other assets similar to the one that crashes? (what is your result?)

Thanks!

4

Hi.

  1. Autodesk Maya 2013.
  2. I tried it as an ASCII FBX, which didn’t make any difference, except that the FBX was now like 350 mb instead of 70.
  3. No I haven’t, since I don’t have any similar assets, it took a long time to prepare the city for use in UDK originally and I was testing to see how it would look in Rocket now.

This is the first thing I have actually attempted importing to Rocket at all, so I will try a variety of things and see what happens.

5

Thanks for the answers. Have you had a chance to see if any other imported assets caused a crash for you?

Also, would you be willing to send us the FBX that causes the crash so that we can try to reproduce the issue internally?

Thanks