When creating a replication job in vReplicator 5.x and upon trying to choose your target esx(i) host they do not appear. The target hosts have been added into vReplicator and licensed properly as well. When removing the Virtual Center with the target hosts then the target hosts show up in the replication job wizard properly.
Log into your vSPhere Client look for any disconnected ESX(i) hosts and remove them from the Virtual Center. Go back into the vReplicator Gui and refresh and or add back in the target Virtual Center. Now setup a new replication job and the target hosts will show properly now.