I have a strange problem with my new smartcore/ marlin.

I have a strange problem with my new smartcore/ marlin. I cant get the probe offset right. When I send M851 all I get is =
Send: M851
Recv: ok

And the same when I send M48 (probe test)? The Eprom is enabled… Any ideas?

Fixed it by updating marlin v1.0 -> v1.1.0