My Book WD Smartware backup

I am trying to get the WD Smartware to backup my files on my new My Book. When I click on backup files a window pops up that gives two options - erase drive or cancel. In the Information tab - it says there is new software available. When I go to that it says the new software is NOT supported in OS C 10.4.11 (Tiger) which is what I have. What can I do?

Is the drive formatted to use on Mac? Is the Smartware version compatible with Mac?

Joe

Thanks, that was the problem. It was supposed to be formatted for the Mac but when I looked it was formatted for Windows NT so I changed it.