You do not have sufficient permission to save the following content to disk

[MC_Jut]

@artijn

I think I found the error for my problem:
The (small) Rhino model contained many layers, resulting in 6 folders in the World Outliner.
After eliminating one layer in the Rhino structure, Datasmith was able to import the same file.

Reducing the number of characters for in the layers did not have any effect.

Hi Spinaze,

I know this frustrating and we are sorry about this.
Maybe your issue is something completely separated.
I suggest you log your Issue.
The Issue in this thread is more related to the unique name attributed to the mesh on import.
The importer is creating very long name and misleading error message.