iCloud - "There was a problem completing the backup" on iPad2
I have been trying for nearly two days to complete a back-up from my iPad2 to iCloud and continuously get this message: "There was a problem completing the backup."
I was able to get my iPhone-4 to complete the back-up and it seems all the other items associated with iCloud are working fine. This morning, I purchased an additional 10GB of space thinking that I might need more space to complete the back-up. That didn't work.
Can someone guide me in the right direction?
Thanks!!!
iPad 2