Well, here you go, I am having the same problem. Never any worries with Imgburn before now. Have just updated to a DL drive, installed ok, updated the firmware ok, went to burn a disk and ke-bang I received exactly the same error. I also used a Verbatim DVD+R DL disc.
If I can't get passed this error, then imgburn is NOT the best burner program PERIOD.
Help...!