Without having .3do sample files we can't help you.

SDFSDFD wrote: ↑Sat Jun 20, 2020 5:58 pm why this ask for agministrator rights?

If you have installed the program under the c:\Program Files x86 folder, you must have an administrator rights to replace files in the c:\Program Files x86 folder.

Why don't you use the portable version?

I have released the Tree of Savior .3d loader module in the 3D Object Converter v7.032 (Windows). I have add a new parameter to the Options/Import/Tree of Savior .3d: Extract the .png file from the Tree of Savior .3d file after load (default=true) The npc_gragina.3d file has 3 texture files. The loa...

SDFSDFD wrote: ↑Sat Jun 20, 2020 2:57 am how to manual update this 3dconverter.exe?
i dont like it require administrative previlegies

If you don't like the Administrative Privileges don't install it under the c:\Program Files (x86)\.

In your case just use the portable version.

I did not find the vertex bone id (b1,b2) datas, but I have released The I of the Dragon .msh loader module in the 3D Object Converter v7.032 (Windows) How to get the 3D Object Converter: Download the 3D Object Converter from http://3doc.i3dconverter.com and install it or download and use the portab...

I have finished my .3d loader module that supports multiple (sub)objects.

723119159 wrote: ↑Wed Jun 10, 2020 10:43 pm When will it be updated?

I think I did find the vertex weight (w1,w2) datas, but I did not find the vertex bone id (b1,b2) datas.

Without having these values, you can't animate these 3d models.

723119159 wrote: ↑Wed Jun 10, 2020 10:43 pm Wow!Thanks you!But it could import the bone?I have get the mesh.

Today I have added the bone support to it.

I have finished my .msh loader module.

Here I attached the converted Dragon Demon model (as Wavefront .obj format).

Thank you for your unpacker, it works fine.
I am working on the proper .msh loader module.

Can you tell where I can find an extractor for the game's geometry.res and textures.res files?

I don't wait for more sample files and its texture files (or for the working unpacker), so I have released the following program as web update that contain the Lost Saga Online .msh loader module: - 3D Object Converter v7.031 (Windows) How to get the 3D Object Converter v7.031: Download the 3D Objec...

IuriDrago,

Can you tell me how can I unpack the Lost Saga's map.iop file?

I think the second object's UVs are fine and the second object does not use the main texture.

Here I attached the converted files in Wavefront .obj format.

All of your files except the mephisto_weapon.msh have 2 objects, but I think the second object does not use the main texture.