NFS headache!

[Skywatch]

Hi all,

Just been trying to use NFS between the pi and nas instead of SMB to see what the difference would be.

I added a NFS share under Video>Files etc.
Showmount lists the share fine.
XBMC shows the share and files within it in System > File Manager.

But, when I try to access it from the Video>Files I can see the share and click on it, but it won't open and show the files there for selection.

Could this be due to the nas running ext4 internally?
Is it something else? Is there a work-around?

skywatch.