Help to extract model?

Hello everybody.
I wanted you ask some help on extracting models/textures from Unity .assets files…

I tried using Disunity ver 3,4,5 with Disunity GUI, but it seems that nothing is working. No new files created.
I swear I could do it for a different game .assets previously

It would be a great help if you guys can try extracting this assets, and instruct me on how to do it correctly
Thanks in advance.

Here’s the assets