Hello Ken,
Checkpoint restart cannot be applied to the following resource(s):
System?StateBackup Exec will not follow mount points, junction points, and symbolic links when the Simplified Disaster Recovery indicator is ON.
The above is not an error but just an information message. Checkpoint restart option is just for Files and folders and not for any application.
Drive and media mount requested: 1/22/2013 11:00:08 PM
No appendable media could be mounted.
Switching to overwrite operation on scratch media.
Also this is not an error too. Since it Dedupe it will always going to overwrite the media or create a new OST device appending does not happen. So this is not an error but just an information.
Your backups are still good for SDR.
Thanks,
-Sush...