Hello. I am having an issue backing up the virtual clients of a new Microsoft Windows 2003 Cluster. The clients back up perfectly fine from a success standpoint. The only issue is the incremental backups change to a full backup, which shouldn't be happening. The error I receive on the group is:

No full backups of this save set were found in the media database; performing a full backup.

But, they have already completed a full backup, and it completes successfully every day. This happens on every logical volume on every virtual client. The physical cluster clients (used to back up the private disks of the cluster nodes) work correctly, however.

Any ideas?