Send to Unreal is broken in Blender 4.0 beta, FBX is corrupted/Missing data

[funkysandwich]

Hi. Upon using Push Assets in Blender 4.0 beta, the assets fail to be imported by Unreal, but in Blender 3.6 it works fine.
An export using Blender's built in FBX exporter in 4.0 does import. Just not ones from Push Assets.

Snippet from Unreal output log on import

LogFactory: FactoryCreateFile: StaticMesh with FbxFactory (0 0 C:/Users/funky/AppData/Local/Temp/blender/send2ue/data/StaticMesh/Blender40ExportTest.fbx)
LogFbx: Loading FBX Scene from C:/Users/funky/AppData/Local/Temp/blender/send2ue/data/StaticMesh/Blender40ExportTest.fbx
FBXImport: Warning: FBX Scene Loading Failed : 'File is corrupted Blender40ExportTest.fbx' 
FBXImport: Warning: Can't detect import type. No mesh is found or animation track. 
LogAssetTools: Warning: Failed to import 'C:/Users/funky/AppData/Local/Temp/blender/send2ue/data/StaticMesh/Blender40ExportTest.fbx'. Failed to create asset '/Game/UNSORTED/Blender40ExportTest'.

Tested with Blender 4.0.0 Beta, and Send to Unreal 2.4.2

[kapi113]

Same for Blender 4.1
I hope for a quick fix since Blender files 4.0 and above are not compatible with 3.65 anymore.

[universalconquistador]

Same for Blender 4.0 general release.

[jesseunderdog]

+1
Generated FBX for UE import flagged as corrupted.
UE: 5.3.1
Blender 4.0.1

The very same file works fine with Blender 3.6.5.

[grahamwheaton]

Same issues for me. Blender 4.0/ UE 5.3.
Was previously working fine with Blender 3.6

[LiuYangArt]

+1 having the same problem here. blender 4.0

[somaprod]

same here, blender 4.0.1

[eatmylazer]

Glad to know it isn't my mesh. Almost had a heart attack here.
Same to me.

[Ondicknek]

same here, fixed it by exporting the 4.0 project as an fbx and importing it into a 3.5 beta version.

[Kingfelix23]

same here, fixed it by exporting the 4.0 project as an fbx and importing it into a 3.5 beta version.

I think it is just the plugin that doesn't work. Exporting a fbx manually and importing it into unreal works

[Ondicknek]

yeah you could export without the plugin but its super slow and annoying

[Kingfelix23]

Yes, of course, but why not just open the blend file in 3.6 instead and use send2ue as usual, no reason to export to FBX, or?

[mlubich]

The same with me.
I had a look into the code and there seem to be some workarounds and fixes on how the 3.x series handled FBX exports.
From what I see the original code (3.x) was copied and slightly altered/fixed and the original methods of the fbx exporter were overwritten during export. This for sure messes up the new 4.0 fbx exporter code.
I did a quick test and reverted the overwrite and from what I see is that the export now works without any noticable problems so far.
Maybe this observation helps to fix this problem.

[LiuYangArt]

can you share the fix version ? Thanks mlubich ***@***.***> 于 2023年12月1日周五 00:30写道：

…

The same with me. I had a look into the code and there seem to be some workarounds and fixes on how the 3.x series handled FBX exports. From what I see the original code (3.x) was copied and slightly altered/fixed and the original methods of the fbx exporter were overwritten during export. This for sure messes up the new 4.0 fbx exporter code. I did a quick test and reverted the overwrite and from what I see is that the export now works without any noticable problems so far. Maybe this observation helps to fix this problem. — Reply to this email directly, view it on GitHub <#676 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALBCL6SSPOV763RSGXDH2BTYHCYAVAVCNFSM6AAAAAA6ET5FV2VHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTQMZUGEYTIMZZHE> . You are receiving this because you commented.Message ID: ***@***.***>

[Kingfelix23]

I am a bit unsure what you mean. Did you change code in send2ue or in Blender itself?