Problem at burning .mdx image

[DVD good-for-nothing]

Hello!

I have a .mdx image that I can run perfectly using Daemon Tools. The problem comes when I burn that image into a DVD. I use Astroburn to do it. But when I try to run the program from the burned DVD it says: "the disk could not be verified to be a valid original". And the program wont run.
Why is that happening? (I know is not the original DVD) The mounted image works fine. Can I do something about it?

Thanks

[hech54]

It's called copy protection or structure protection. Buy the original.

[DVD good-for-nothing]

Thanks. So there's nothing I can do.

PS. I bought the original but I could not withdraw it from Customs (administrative issues). So i found the image on the internet and tried to make the DVD myself.