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

Here’s a proper fix until addon is updated:

the fbx.py file mentioned above is what we need to change

go to line 35, add elem_data_single_char to the list so it looks like

from io_scene_fbx.fbx_utils import (
    FBX_MODELS_VERSION,
    FBX_POSE_BIND_VERSION,
    FBX_DEFORMER_SKIN_VERSION,
    FBX_DEFORMER_CLUSTER_VERSION,
    BLENDER_OBJECT_TYPES_MESHLIKE,
    units_convertor_iter,
    matrix4_to_array,
    get_fbx_uuid_from_key,
    get_blenderID_name,
    get_blender_bindpose_key,
    get_blender_anim_stack_key,
    get_blender_anim_layer_key,
    elem_empty,
    elem_data_single_bool,
    elem_data_single_int32,
    elem_data_single_int64,
    elem_data_single_float64,
    elem_data_single_string,
    elem_data_single_int32_array,
    elem_data_single_float64_array,
    elem_properties,
    elem_props_template_init,
    elem_props_template_set,
    elem_props_template_finalize,
    fbx_name_class,
    elem_data_single_char
)

Search for b"Shading" and replace elem_data_single_bool(model, b"Shading", True) with elem_data_single_char(model, b"Shading", b"\x01")

That’s all!

Fix worked perfectly. Thank you!

Attaching this because I thought someone would have posted a fixed version in comments, but I didn’t see one. Enjoy

send2ue_2.4.3_editedwithfix.zip

Here’s a proper fix until addon is updated:

the fbx.py file mentioned above is what we need to change

go to line 35, add elem_data_single_char to the list so it looks like

from io_scene_fbx.fbx_utils import (
    FBX_MODELS_VERSION,
    FBX_POSE_BIND_VERSION,
    FBX_DEFORMER_SKIN_VERSION,
    FBX_DEFORMER_CLUSTER_VERSION,
    BLENDER_OBJECT_TYPES_MESHLIKE,
    units_convertor_iter,
    matrix4_to_array,
    get_fbx_uuid_from_key,
    get_blenderID_name,
    get_blender_bindpose_key,
    get_blender_anim_stack_key,
    get_blender_anim_layer_key,
    elem_empty,
    elem_data_single_bool,
    elem_data_single_int32,
    elem_data_single_int64,
    elem_data_single_float64,
    elem_data_single_string,
    elem_data_single_int32_array,
    elem_data_single_float64_array,
    elem_properties,
    elem_props_template_init,
    elem_props_template_set,
    elem_props_template_finalize,
    fbx_name_class,
    elem_data_single_char
)

Search for b"Shading" and replace elem_data_single_bool(model, b"Shading", True) with elem_data_single_char(model, b"Shading", b"\x01")

That’s all!

Thanks for the instructions. I just tried it and it worked for me in Blender 4.1 Alpha.

Thanks for the update! This does fix the issue for me.

FYI: For anyone interested - not all steps may be required, but I was just being cautious.

• Unzipped addon folder.
• Found file and edited.
• Zipped up folder (make sure not to have another folder level deep in the zip - zip file structure should match the original).
• Removed the previous install of the addon from blender.
• Closed Blender.
• Opened Blender Installed updated zip.
• Closed Blender and re-opened.

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

Total Novice here gang. I edited the fbx.py mentioned above, but still have the same exact problem when pushing to unreal Using Unreal 5.2.1 & Blender 4.0.2

Am I missing something? Yes the comma is there

I had to close and reopen blender. Maybe that helps you too.

Total Novice here gang. I edited the fbx.py mentioned above, but still have the same exact problem when pushing to unreal Using Unreal 5.2.1 & Blender 4.0.2

Am I missing something? Yes the comma is there

same here!

Total Novice here gang. I edited the fbx.py mentioned above, but still have the same exact problem when pushing to unreal Using Unreal 5.2.1 & Blender 4.0.2

Am I missing something? Yes the comma is there

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

same here, blender 4.0.1