Two members of replica set cannot be synchronized because there is no common starting point to start the synchronization. I have 12 replicas set up on a LAN since the begining of the year, everything was working fine until about 2 weeks ago. I recreated all the back ends and they will sync for a couple days then I recieve that error from someone and everyone else goes down shortly there after. Does anyone know what causes this error? The database was first distributed in Jan of this year.