I have now wasted over 15 dual layer discs that report Medium Sense Errors. Other than for dual layer burning, I think Burn is a great application, but I cannot afford to keep buying DVD's only to put them in the bin. I have tried using various versions of Burn, being 2.3U, 2.41U and 2.9U Pre Release, and all return exactly the same error, but at different stages of the burn.