[dnanian]

Hi, Raphael -- I'm not quite sure what's not working here, the DMG or the application, but I'll try to review both.

If, when you double-click on the DMG it does not mount, your image might be damaged. I'd suggest deleting the one you've got a re-downloading from the web site. Here's a direct link:

http://www.shirt-pocket.com/downloads/SuperDuper!.dmg

If the application isn't working, make sure you've copied it into /Applications, and you're running the one on your hard drive, not on the DMG. (Once you've copied off the application, you can unmount and trash the DMG.)

If that still doesn't work, open up the Console application. This'll display error messages that are normally hidden. Press Cmd-k to clear the console, and try to launch SuperDuper! again -- do any error messages appear in the console? If so, could you copy and paste those messages into a reply?

Thanks.