Time Machine using OSX Mavericks

I installed 5.3.10-T3 on my Duo v2 and have a complete Time Machine backup.
I had an issue with my iMac hard disk, so reformatted and reinstalled Mavericks.
When I try to transfer information from the back up, I login and I see the machines I have backed up, but the message "No volumes found in backup" appears under 3 of 4 machines.

There is a pop up message the first time I try:

Some backups cannot be opened. Make sure that all of your network devices are connected and turned on. It appears that some backups are already in use. If you don't see the backup you need, make sure it is not currently mounted by another machine and try again.

I have turned off Time Machine on the other computers, but that doesn't help.
I've connected with my MacBook via AFP and see that the sparse images are all there, but don't know how to access the backup from the Time Machine restore.

Any ideas?

Thanks