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Save glTF from ASCII to binary

Hi, I try with code below to read a glTF ASCII file and save in binary mode.
But when open new file I don’t see anything.
What’s wrong?

Scene _scene = new ();
string fileName = “c:\sample.zip”; //glTF ASCII
FileFormat inputFormat;
inputFormat = FileFormat.Detect (fileName);

// Display the file format
Console.WriteLine ($"{fileName} file format: " + inputFormat.ToString ());

// load scene from glTF zip
_scene.Open (fileName);

GltfSaveOptions saveGltfOpts = new (FileFormat.GLTF2_Binary)
{
SaveExtras = true,
DracoCompression = true,
};

// save in binary format
_scene.Save (“c:\sample.glb”, saveGltfOpts);

@a.pellegrini

Are you using a valid license while using the API? Can you please share your sample file for our reference so that we can test the scenario in our environment and address it accordingly.

Yes, I use a valid trial license:
0d04ab9e-3a88-401c-b121-db485e0b5c12
20231207
20230107
This is a temporary license for non-commercial use only and it will expire on 2023-01-07

This is the file https://cubinto.maffeis.it/doc/sample.zip

@a.pellegrini

An issue as THREEDNET-1297 has been logged in our issue tracking system for the sake of further investigation. We will look into its details and keep you posted with the status of its correction. Please be patient and spare us some time.

We are sorry for the inconvenience.

@a.pellegrini
Can you share what tool you used for viewing the generated file? Thanks.

I open in Blender 3.3 and XbimXplorer
image.png (14.5 KB)

@a.pellegrini

We will get back to you soon on it after investigating the ticket.