I've been using ntbackup on some XP Pro machines at a client site to run nightly scheduled backups. Recently one machine quit doing the backups. I went to the machine and tried to open ntbackup and it just kind of flashed and went away. I don't think I even ever saw a glimpse of the gui, but I don't remember. Either way I can't work in the GUI because of this. There is, however, an ntbackup.exe process running in task manager. I ran into this exact problem on my home pc about a year ago and fixed it after searching and finding a fix on the internet but I can't remember or find the fix again.