I have been backing up my dvd's now for about a year with dvd shrink and decryptor. Never really had any problems, until now that is. I have been trying to back up some dvds that i got for xmas and everything runs as normal but when i try to play the backed up copy it is a blank disc, everytime. The only thing different is that I am using some dvd-r's instead of dvd+r's. Could this really be the problem? Ant help would be greatly appreciated, thanks.