Problem Imaging 8-slot cRIO

[Korakos]

Well.

Turns out we are having a bit of a problem here, maybe someone has run into it and can help us out:

We are not able to image our 8-slot cRIOs. whenever we try we get a "could not connect to ip (10.22.83.2), ensure you have a network adapter in the same subnet..."

I have checked and have the configuration of the laptop all in order, have tried both windows 8 and 7, on 4 different machines, and every time we get the same mistake, the strange part is: all 4 of those machines can image our 4-slot cRIO, just not the 8-slot ones. no matter what i do, i always get the same error, I've tried:

setting the Subnet Mask to both: 255.0.0.0 and 255.255.255.0 .
disabling all other network adapters.
disabling the firewall in windows.
using both a cross-over and regular UTP cable.
safe mode restoring the cRIO (i am able to reformat, but when the time comes to load an image, i get the connection error)

do you guys have any idea for why we would be unable to image the 8-slot? when we can do the 4-slot just fine?