My ver.9.3854 had been working fine; and produced a good full back-up a couple weeks ago. ----------- Then: after installing Diskeeper; doing lots of scanning of negatives; getting system hang-ups; uninstalling Diskeeper; etc. Decided to use the back-up to restore system to before all the fussing. What had verified as a good back-up, reported to be corrupted. Panic-time! ---------- One back-up from April did verify as OK, so I restored my system with that, using 9.3854 rescue disk. ---------------- I decided to install ver 10.4942 - purchased months ago, but never installed. That seems to be running OK. Back-up time ~20minutes like I've become accustomed to. But that is giving "error E00070020" corrupted message also when making a full back-up. What info is needed to get some help? Dell 8400; Win XP2 fully up-to-date; 1gig RAM; drives seem OK by chkdsk testing.