Upgraded to 6.2.2 from 6.1.9. Can't enable SMB

Nas storage: RN-102

With the 6.2.2 update I can't enable SMB in System/Settings/Services.
Access on windows (windows 7/8) through the network has been lost. It's no longer apart of the network (RN-102 is in the same homegroup, always has been)
I am able to access the files on the RN-102 through Plex media server or Windows media player.

SMB is disabled (grey bar, no green bar). When I click on it, the systems seems to try to enable SMB but eventually nothing happens (this process does not take long, maybe 2 seconds).
I can enable/disable all other services with no issues.

I downloaded 6.2.2 RC1 and installed firmware, but I'm sure if it was successful. I don't remember if there should be a message confirming the upgrade... I did not get a prompt confirming
firmware upgrade. (download link to 6.2.2-RC1 - http://www.readynas.com/forum/viewtopic.php?f=154&t=78866)
I still see 6.2.2 as the installed firmware, should this be 6.2.2-RC1?

How do I enable SMB for windows now?


Thanks.