Error exporting Skyrim SE nif

[ThePagi]

Issue Overview

The following error appears when trying to export a nif file that was previously imported without any modifications.

Python: Traceback (most recent call last): File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\base_struct.py", line 240, in validate_instance f_type.validate_instance(cls.get_field(instance, f_name), context, *f_arguments) File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\formats\base\basic.py", line 86, in validate_instance assert (instance == cls.from_value(instance)) AssertionError

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\base_struct.py", line 240, in validate_instance
f_type.validate_instance(cls.get_field(instance, f_name), context, *f_arguments)
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\base_struct.py", line 242, in validate_instance
raise ValueError(f"Validation failed on {cls_name}.{f_name}")
ValueError: Validation failed on ByteColor4.g

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\base_struct.py", line 240, in validate_instance
f_type.validate_instance(cls.get_field(instance, f_name), context, *f_arguments)
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\array.py", line 228, in validate_instance
f_type.validate_instance(cls.get_field(instance, f_name), context, *f_arguments)
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\base_struct.py", line 242, in validate_instance
raise ValueError(f"Validation failed on {cls_name}.{f_name}")
ValueError: Validation failed on BSVertexDataSSE.vertex_colors

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\operators\nif_export_op.py", line 148, in execute
return NifExport(self, context).execute()
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\nif_export.py", line 271, in execute
data.validate()
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\formats\nif_init_.py", line 641, in validate
type(block).validate_instance(block, self, arg=0, template=None)
File "C:\Users\exist\AppData\Roaming\Blender Foundation\Blender\3.6\scripts\addons\io_scene_niftools\dependencies\nifgen\base_struct.py", line 242, in validate_instance
raise ValueError(f"Validation failed on {cls_name}.{f_name}")
ValueError: Validation failed on BSTriShape.vertex_data

Version Information

Blender Niftools Addon Version Info

0.1.1 (latest in releases)

Blender Version Info

3.6.5
Tried also with Blender 4.0 - that also had an error while importing

Platform information

Windows laptop, old intel i5, nvidia 1050ti

Steps to Reproduce

Import nif file, attempt to export again

Nif File

Cannot share the files, but it's vanilla Skyrim models, for example meshes\clutter\table01.nif

[Candoran2]

This seems to be the same issue faced in #617 (not the initial one but the one that's fixed by RGBA attribute removal).

[ThePagi]

Can confirm that removing RGBA color attribute (vertex colors) fixes the export.

[Orfey1]

I have the same problem but my file has no RGBA color attribute or anything else inside Vertex Colors. What do I do?