When burning a Double Layer DVD i get the error message 'Power Calibration Error'. I am able to burn single layer (normal 4.7 GB) discs without any problems. I have tried different media, same problem, and there is no dust, its all cleaned out, firmware is updated, all the cables are ok thats why i can burn normal DVD's but i dont know what the problem is with double layer DVDs. I have a Pioneer DVR-109 burner and I am using Nero