I have Windows XP operating system and I get the same message C0000013 Paraneters 75b6bf9c 7b6bf9c when attempting to back up data. After I have clicked 4 times, the message goes away, but when I try to back up my data I get the message "Dynazip error - Nothing to do 07/23/2007" or whatever the date is that I'm trying to back up. HELP?? I've downloaded HiJackThis and have a log available...Thanks.