Wont identify drives on MBP 15 Retina

I used this very successfully on my previous laptop (MBA 11 i7) but on my new MBP 15 Retina, it will not recognize any of my 5 external hard drives. The same drives were recognized on my MBA. When it works, its great but it seems to depend on what type of Mac you have.

JerryJones2 about Data Rescue 3 External Drive Recovery