Default Samba not working in 10.2.1

I just upgraded from CM 10.1 to 10.2.1.

Samba app was working in 10.1 but in 10.2.1 it fails to share "sdcard".

Anyone have suggestions?

The Samba app I am using is the server on my Nook, and the client at my PC.
Where is smb.conf located on my Nook?

Thanks

Carl