Can`t record from hd-dvd

i have a 5045 liteon that is 1 1/2 years old i have never upgraded the software on it so that maybe the problem i can record from the dish onto the hdd or the dvd my problems are that it will not allow me to copy from hdd -dvd i push the copy button it reads the dvd the copy screen comes up and it just seems to freeze i unplug it start the process over again it reads the dvd a second time and says the dvd is invalid this happened about 4 times but there is nothing on the dvds also there are 3-4 movies that i wasn`t able to play that i had recorded onto the hdd
thanks for any help

problem solved