I imported the assets and it gave me an error saying there was no file associated with .blend flies. So I checked the file association:
but in unity all my blender files are invisible:
I try to drag a prefab into the scene and the object is invisible.
I deleted the unity files, then re-imported the package again and it worked.
I seem to be having this issue, can you be more specific about what you deleted? I deleted the world objects and re-imported the world objects v1 package and am still having trouble seeing anything.
I deleted the files that it added before.