Send2unreal plugin not working - UE 4.26.2 - Blender 4.0.1

[JIGASHI]

---

(I removed windows user name in this error paste)
Tried the last 6 send2unreal add-on versions.
Remote execution is enabled in unreal, and no blockage in firewall.
239.0.0.1:6766
0.0.0.0

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Python: Traceback (most recent call last):
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\dependencies\rpc\factory.py", line 221, in run_function_remotely
return remote_function(*args)
File "C:\Program Files\Blender Foundation\Blender 4.0\4.0\python\lib\xmlrpc\client.py", line 1122, in call
return self.__send(self.__name, args)
File "C:\Program Files\Blender Foundation\Blender 4.0\4.0\python\lib\xmlrpc\client.py", line 1464, in __request
response = self.__transport.request(
File "C:\Program Files\Blender Foundation\Blender 4.0\4.0\python\lib\xmlrpc\client.py", line 1166, in request
return self.single_request(host, handler, request_body, verbose)
File "C:\Program Files\Blender Foundation\Blender 4.0\4.0\python\lib\xmlrpc\client.py", line 1182, in single_request
return self.parse_response(resp)
File "C:\Program Files\Blender Foundation\Blender 4.0\4.0\python\lib\xmlrpc\client.py", line 1354, in parse_response
return u.close()
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\dependencies\rpc\client.py", line 55, in close
raise exception(exception_message)
Exception: FbxStaticMeshImportData: Failed to find property 'build_nanite' for attribute 'build_nanite' on 'FbxStaticMeshImportData'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\operators.py", line 71, in modal
raise error
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\operators.py", line 61, in modal
function(*args, **kwargs)
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\core\ingest.py", line 26, in import_asset
UnrealRemoteCalls.import_asset(file_path, asset_data, property_data)
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\dependencies\rpc\factory.py", line 248, in wrapper
return rpc_factory.run_function_remotely(function, args)
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\dependencies\rpc\factory.py", line 226, in run_function_remotely
raise exception.class(stack_trace).with_traceback(call_traceback)
File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\core\ingest.py", line 26, in import_asset
UnrealRemoteCalls.import_asset(file_path, asset_data, property_data)
Exception: FbxStaticMeshImportData: Failed to find property 'build_nanite' for attribute 'build_nanite' on 'FbxStaticMeshImportData' File "C:\Users\AppData\Roaming\Blender Foundation\Blender\4.0\scripts\addons\send2ue\dependencies\unreal.py", line 1244

---

(I removed windows user name in this error paste)
Tried the last 6 send2unreal add-on versions.
Remote execution is enabled in unreal, and no blockage in firewall.
239.0.0.1:6766
0.0.0.0

[weedhead69]

I give up... same Problem with: Blender 3.6 or 4.0 and UE 4.27.2. - send2unreal v. 2.4.3

I also tested with Blender 4 and UE 5.23 -> nothing happens.

`FBX export starting... 'C:\Users\gilli\AppData\Local\Temp\blender\send2ue\data\StaticMesh\SM_Cube.fbx'
export finished in 0.0000 sec.
Traceback (most recent call last):
File "C:\Users\gilli\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\dependencies\rpc\factory.py", line 221, in run_function_remotely
return remote_function(*args)
File "C:\Program Files\Blender Foundation\Blender 3.6\3.6\python\lib\xmlrpc\client.py", line 1122, in call
return self.__send(self.__name, args)
File "C:\Program Files\Blender Foundation\Blender 3.6\3.6\python\lib\xmlrpc\client.py", line 1464, in __request
response = self.__transport.request(
File "C:\Program Files\Blender Foundation\Blender 3.6\3.6\python\lib\xmlrpc\client.py", line 1166, in request
return self.single_request(host, handler, request_body, verbose)
File "C:\Program Files\Blender Foundation\Blender 3.6\3.6\python\lib\xmlrpc\client.py", line 1182, in single_request
return self.parse_response(resp)
File "C:\Program Files\Blender Foundation\Blender 3.6\3.6\python\lib\xmlrpc\client.py", line 1354, in parse_response
return u.close()
File "C:\Users\gilli\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\dependencies\rpc\client.py", line 55, in close
raise exception(exception_message)
Exception: FbxStaticMeshImportData: Failed to find property 'build_nanite' for attribute 'build_nanite' on 'FbxStaticMeshImportData'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\weedhead\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\operators.py", line 71, in modal
raise error
File "C:\Users\weedhead\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\operators.py", line 61, in modal
function(*args, **kwargs)
File "C:\Users\weedhead\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\core\ingest.py", line 26, in import_asset
UnrealRemoteCalls.import_asset(file_path, asset_data, property_data)
File "C:\Users\weedhead\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\dependencies\rpc\factory.py", line 248, in wrapper
return rpc_factory.run_function_remotely(function, args)
File "C:\Users\weedhead\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\dependencies\rpc\factory.py", line 226, in run_function_remotely
raise exception.class(stack_trace).with_traceback(call_traceback)
File "C:\Users\weedhead\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\core\ingest.py", line 26, in import_asset
UnrealRemoteCalls.import_asset(file_path, asset_data, property_data)
Exception: FbxStaticMeshImportData: Failed to find property 'build_nanite' for attribute 'build_nanite' on 'FbxStaticMeshImportData' File "C:\Users\weedhead\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\send2ue\dependencies\unreal.py", line 1244`

[EricE-MW]

Same here, sent to unreal 4.3.2 doesnt work with blender 4.0. Same addon with 3.6 works!

[mikevarilek]

Send To Unreal 2.4.3 is also not working with Blender 4.0 and UE 5.3.2. New project, export of Cube only. Errors:
FBX Scene Loading Failed : 'File is corrupted Cube2.fbx'
Can't detect import type. No mesh is found or animation track.

[vikista]

Same here, have to use Blender 3.6 to export to UE :(

[JoshQuake]

I have posted a fix here: #676 (comment)

[jamesbaber1]

Thanks for the fix @JoshQuake. Looks like there are a number of test cases still failing with send2ue and Blender 4.0, but this fixes one of the fbx issues.

For now I would reccomend people stay on blender 3.6 and Unreal 5.3 if you want the addon to work. There have been some python API changes in blender 4.0. Im hoping to get some time to look through these failed tests in a week or so.

@JIGASHI and @weedhead69 The issues you are having is using unreal 4 with the latest addon version. The latest version of the addon is only compatible with the versions listed in the release notes. If you need to use unreal 4, check through old releases till you find one that says the tests are passing on Unreal 4.

[weedhead69]

Thank you, that sounds good.

[alexisrivera3d]

Please fix the addon :( @JoshQuake posted a fix for that