I have a pioneer A09 burner. It’s error when it burns disc images DVD+R, if burns data is no problem, but if what I burn it is an image (for example a copy on the flight with alcohol 120) does not show error message, but the resulting disc is ilegible even for the own A09. I think the problem is that it does not close the disc. At this moment I have firmware 1.58 but I have put the 1.40 and the buffalo firmware and the problem always is the same one. I have placed it like master and slave, and the continuous problem. The problem is only with DVD+R disc, whit DVD-R, DVD+RW or DVD-RW no problem.