Disk full problems???? HELP

I bought a Lite-on DVD writer SHW-160P6S to copy my dvds. Every time that I try to use it to burn a dvd a message pops up saying there is not enough room to write to the disk even though the disk is new(tried many disks). What am I doing wrong. I use a dvd de-crypter and use dvd shrink but when it is time to burn the disk the message pops up. Even when not triing to burn a disk I can put a disk in and check the properties and it will say the disk is full.... Some help me.

Can you try it again, save the log file and post it?

newbie I am, where is the log file at?

or maybe the size of the data is beyond 4.38gb and the dvd is single layer :)