I did find this thread with a very similar issue:
http://community.wd.com/t5/WD-My-Cloud-EX4/Raid-Recovery/td-p/662101
However he did not post the resolution.
I did find this thread with a very similar issue:
http://community.wd.com/t5/WD-My-Cloud-EX4/Raid-Recovery/td-p/662101
However he did not post the resolution.