Hello This has been happening for a while now. The backup is scheduled to run autmoatically and this message pops up a lot. Does it mean there is an error reading the data off the internal hard drive or an error writing to the external hard drive. ie which hard drive has gone, if any? What can I do? Previously its been working fine for about a year. We've tried to create a new backup then run new incrementals off that but the message still appears. Thanks in advance!