Votes
0
Product:
Character Creator 5
Version:
5.03
Status:
Closed
Issue 12310
Unreal AutoSetup 1.41 crashes on fbx import (unreal 5.6)
Importing the following model into unreal engine crashes the editor with the following error
Model: https://drive.google.com/file/d/1xNf29op3TAfPamavrE51CaIAJ0m8e_u5/view?usp=sharing
Error:
```
Assertion failed: Pair != nullptr [File:C:\Program Files\Epic Games\UE_5.6\Engine\Source\Runtime\Core\Public\Containers\Map.h] [Line: 729]


UnrealEditor_Core
UnrealEditor_RLPlugin!FRLPluginModule::AutoSetup() [C:\Code\Unreal\CCAutoScriptForUnreal\Auto Setup 1.41 For Unreal 5.6\Plugins\RLPlugin\HostProject\Plugins\RLPlugin\Source\RLPlugin\Private\RLPlugin.cpp:1136]
UnrealEditor_RLPlugin!UCCFbxFactory::FactoryCreateFile() [C:\Code\Unreal\CCAutoScriptForUnreal\Auto Setup 1.41 For Unreal 5.6\Plugins\RLPlugin\HostProject\Plugins\RLPlugin\Source\RLPlugin\Private\CCFbxFactory.cpp:316]
UnrealEditor_UnrealEd
UnrealEditor_AssetTools
UnrealEditor_AssetTools
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll
```

System info in attachement
OS: Windows 11
Attachment:
  •  6
  •  319
Bug
Submitted byNehon
1 2
COMMENTS (6)
Nehon 
Sorry for the late answer. I tested this and it works thank you! you can close the ticket
Nehon 
Ha! silly mistake! I did rename the file to not erase the original one, I didn't realize it could impact the json.
I can't test that right now, but I will. 
Thank you for the help.
Feedback Tracker Admin 
Hi Nehon

We’ve identified the cause of your issue, and it doesn’t seem related to any edits you made in other software.

After briefly reviewing the files you provided, we found that the name inside SethNoCoat5.json is different from the one you previously renamed, which should have been SethNoCoat4.

There are two possible solutions:

1. You can change the “SethNoCoat4” inside SethNoCoat5.json to SethNoCoat5, and then the file should import successfully.

2. Alternatively, you can rename your original SethNoCoat5.fbx to SethNoCoat4.fbx.

However, please make sure that both the FBX and JSON filenames match. This ensures that Auto Setup can correctly detect and process them during import.

Let me know if you need further assistance!

Kayla
Reallusion
Attachment:
  • image (3).png
Nehon 
Sorry for the late answer, 
The fbx was exported from CC5 first, then I deleted some blend keys and vertices in Blender, then exported it again as a fbx. It related to this issue and this forum post
https://www.reallusion.com/FeedBackTracker/Issue/Delete-hidden-Face-option-when-exporting-to-FBX-should-also-delete-vertices
https://discussions.reallusion.com/t/is-there-a-way-to-strip-out-body-morphs-on-export-to-unreal/15852/2

I mean, I know I fiddle with things that I shouldn't fiddle with, and it's fair if the plugin fails to load the file afterward, but it should not crash the whole unreal engine editor. I expect it to fail to load with an error and allow me to move on.
The file provided was for you to be able to reproduce the issue and add a fail safe for that case, if possible for future versions.

I can attach the ccProject, but if I export the model and don't fiddle with the fbx it "works". The quotes are because if I export the model with the SubD2, the file is huge and it takes literally several hours to open in unreal (but that's and unreal issue IMHO), however exporting the base SubD with baked normal maps work just fine.
Tell me if you still want me to upload my project and I'll add it as a private comment.
Feedback Tracker Admin 
Hi 

We would like to verify the source of the file so we can better understand how to resolve the issue.
Could you please provide the original file you worked with, along with the steps you took and where you exported the FBX from？

Kayla
Reallusion
1 2