VSS SYSTEM BOOT:\ full backup size is 4 B,

Hi All,

always VSS SYSTEM BOOT:\  full backup size is 4 B, why is it so, please give me suggestion what to do, where the problem is and how to over come this.

Reference: mminfo logs:

CN0306         09/08/10 07:00:36    4  B 3230100693 cb full VSS SYSTEM BOOT:\

Networker Server version: NetWorker 7.4.5.Build.726 Enterprise Edition

Networeker Client version: 7.4.2

thanks in advance.