singkuy - this could be what is causing your error... Most double-layer (DL) DVD-R discs are really a RW (re-writable) and that will not work with Alien Respawn or most other imaging utilities. I have tried it with DVD-RW DL and BD-RW DL more than once and it always fails. If the disc has a RW logo on it, you need to start over again with a single-write DVD. These are not easy to find in DL version where I live. They are expensive, and apparently, not very popular because of the cost.