Could be that you need to upgrade your firmware for your burner,as that sets new write strategies for new media thats out..and the media you are using can and will cause the problem you are having..and the newer burners are having problems writing in platinum DVDxcopy or xpress..as those programs have not been updated for over a year and a half..so your burner can be out of the loop..
Firmware is programming that is inserted into a programmable memory area of your drive, thus becoming a permanent part of a drive. This 'software' is called firmware and can be updated with a firmware flasher. Every company has its own methods to allow you to do a firmware upgrade. A firmware upgrade can add new functionality to your drive. Also bug fixes and improvements are done by firmware upgrades. To find you firmware go to your burner homepage and find the firmware for you make and model or
http://codeguys.rpc1.org/firmwares.html good luck.