DVDXCOPY V1.5 reads but doesn't write

[Aworkx]

Hello,

I own a lite on dvd+rw ldw-401s and I'd like to use DVDXCOPY to make back up of my movie without compression (split over 2 disks). The version I have is 1.5.
When I launch, it recognize and reads the original movie but doesn't write.
When selecting Gearworks burn engine in the advanced options, I've an error message "cannot open CD-R interface" and "Can't find a dvd burner". When selecting External Nero pg, I've an error message too "Drive not ready". I'm a newbie with it but I already made backs up of game using dvd decrypter and clone dvd and it worked so I suppose the writer is working good...

Thanks for help guy