This is the answer to this issue. I found it on another forum and am quoting it from there.
http://forums.mactalk.com.au/24/39730-macbook-pro-will-not-burn-dvds.html#post45 3945
"Most people don't know this, but there are actually two pairs of lasers in a DVD-writer, one for CD media, the other for DVD media. One laser in each pair is for reading, one is for writing. The read lasers in each pair run between 3 and 5 mW, the CD write laser runs at 80 to 180 mW, the DVD write laser from 100 to 250 mW. The faster you burn a disc, the more power the write laser requires.
Where the problem lies in modern DVD writers is that the focus lenses are no longer made of glass, but of plastic, and the more power the write laser pushes through them, the faster the plastic lens degrades due to heat build-up. The writer's electronics are self-adapting to a point, and will increase power as the plastic starts to fog, but eventially even at maximum power output the lens is too far degraded to get an accurate write.
This problem has become more commonplace in the last three years as DVD writer speeds have increased, along with the fact that build quality has declined, with optical drives becoming virtually a consumable.
I can only assume that the posters who have had this power error problem pop up have been burning a lot of DVDs at maximum (x16) speed.
if you want your DVD burner to last the distance, do not burn at the media or the drive's maximum capability."
I burned at the lowest speed with success.