Migrate discs from RNDP400U to RN104

My RNDP400U suffered a fatal fall and is out of commission. I ordered a RN104 to replace it since the RNDP400U is discontinued. I have installed the 4 WD green 3 TB drives from the old unit (I know they are not on the list which is really disappointing as they are 1.5 yr old.) and when I boot up the NAS I get this "ERR: Could not properly extract"

Any thoughts?

Thanks,

Dave