Sorry, i've been looking in clonedvd for your Source target and Target & i can't see them.
On clonedvd it's like a film strip, on the second piece of film "Titles & configuration" where at the top there is DVD video title and you browse for VIDEO_TS
Next page is "audio" and no drop down boxes, Next is Output Method and drop down boxes are Write speed, Volume lable and Temp. Directory & This is where your DVR should be auto recognised as the target drive, so your drop down box is a mystery to me.
Been searching around, you have the "wrong" clonedvd for this forum.
Get your clonedvd from,