Replica Sync fails

Hello,

    Every time a replica sync runs on a volume backup on a file server I get the error:

DPM could not log files that were skipped during backup to \\?\Volume{xxxxxxxxxxx}\xxxxxx\FailedFiles.dat (ID 32577 Details: ) 

I’ve tried the suggested fix here: https://social.technet.microsoft.com/Forums/en-US/f7de60cd-841f-4d22-862e-aaf3723717c7/dpm-could-not-log-files-that-were-skipped-during-backup-to-volumexxxxxfailedfilesdat-id?forum=dataprotectionmanager and I get the error: The parameter is incorrect. When trying to mount the replica volume.

Any ideas how to get the replica sync working again?

Thanks,

J