Lost Plan

My Book Mirror Edition

For the the 3rd time the pop up box has advised no backup plan was available, this is now the 3rd time and I have created a new plan each time (is there a way to search for a backup plan?).

I have the same Mirror Edition at work for nearly 2 years and never an issue, the problem is with my home one.

I have upgraded to Windows 7 (don’t bother if you have Vista), so that might be the issue, but any pointers would be most helpful!!