2nd Partition error "Invalid or nonexistent document"

When configuring the 2nd Partition of a partitioned server the following error is displayed when the Setup button is pressed. “Invalid or nonexistent document”

Both servers have an OU level.

i.e. ServerName01/Servers/DomainName

The NIC card has been configured with Multiple IP Addresses. The servers are a new Domino Domain and have been installed with R6.0 only.

Has anyone experienced this problem?