How I got Casper to work.........finally. Disconnect the computer from the internet. Turn off any Virus program. It says that you don't have to, but do it. Turn off any firewall, windoze too! It says that you don't have to, but do it. Start Casper. When you get the screen that has how many gig to use change it to 100%. It should work now.......without any of those stupid error messages that lead nowhere.