Indigo fail to open a scene because of not found textures

[ROUBAL]

Hi, I encounter on a big scene made with Blender a weird problem. When I export a scene from blender,
Indigo fails to open the scene because of some textures that are not found (they are even searched on a wrong disk!).

The very weird thing is that even if the textures are removed from the Blender scene (no more suppoted by any material) and deleted from the exporter fields, and even if the scene is exported in a new igs file, indigo still claims that these textures are missing !

I have attached the pop up warning.

Thanks in advance for any helpful idea !