I had replication jobs in vRanger working properly while running vCenter Server 5.1 and vRanger 6.1.0.35402. I then updated the vCenter Server and all five ESXi hosts to version 5.5 and added two clusters to my existing vCenter configuration, giving me a total of three clusters. I then removed all jobs in vRanger and removed the inventory objects. I re-added the VC instance in vRanger, added credentials for each of my five hosts, applied vRanger licensing to four of the five hosts (the host that is not vRanger-licensed is the host in my disaster recovery center), and successfully created and tested several backup jobs.
What is broken, however, are newly created replication jobs. I cannot get replication jobs to run. During the configuration of a replication job, I am met with a message stating "no credentialed hosts found".