Looks like the conversion from prefab to scene is not working, the mesh are not imported.

[Gobi-one]

Other than that, the textures, materials are imported correctly.
Here is the stack trace of one of the 10.000+ exceptions I have when trying to import the Polygon prototype pack https://syntystore.com/products/polygon-prototype-pack:

E 0:01:21:0851 asset_base.gd:77 @ load_binary(): Asset::LoadBinary::PackageExtractBinaryFailed
<C++ Source> ./core/variant/variant_utility.cpp:905 @ push_error()
asset_base.gd:77 @ load_binary()
comp_doc.gd:416 @ _comp_doc_mesh_filter__mesh_from_ref__gltf_scene()
comp_doc.gd:256 @ _comp_doc_mesh_filter__mesh_from_ref()
comp_doc.gd:611 @ _apply_component__mesh_filter()
comp_doc.gd:450 @ apply_component()
comp_doc.gd:515 @ _apply_component__game_object()
comp_doc.gd:446 @ apply_component()
comp_doc.gd:57 @ comp_doc_transform()
comp_doc.gd:21 @ comp_doc_scene()
asset.gd:139 @ asset_native_format_importer_prefab()
asset.gd:18 @ asset_scene()
upackgd.gd:118 @ ()
upackgd.gd:129 @ ()
upackgd.gd:196 @ build_all_prefabs()
browser.gd:90 @ load_package()
browser.gd:45 @ ()

I use the last versions of the libraries and GODOT 4.1.
Don't hesitate to ask for more infos if needed.

[cbackas42]

I realize this message is quite old, but I recently gave this a try and got the same result as you - everything was failing. I dug into it a bit and found that the problem was that FBX2glTF was complaining about the "-IO" argument.

I think both you and I got tricked into installing the latest "release" version of FBX2glTF because the Forked repo's readme still points to that, and the IO arguments seem to be the point of this fork. The Github actions builds we're meant to use are usually expired.

So I built it manually locally (a bit annoying, it doesn't build with the latest CMake, the version of Boost it's using is old/busted). But once I had the right version in place that recognizes the IO arguments, this error went away and extraction started working! (Bonus, I have an ARM build of FBX2glTF)