These are expensive discs (9.50 euro), so i don't take any risk.
The disc was burned using Nero 188.8.131.52.
Maybe the bitsetting is different on the Benq? I did burn some discs with bitsetting on my NEC3500, and they showed up in CDspeed as DVD-ROM all the way, but the ones burned on the Benq behave different. In CDspeed the disc type is DVD+R DL, shouldn't that be DVD-ROM too? Look at the attachment, that's one burned on my NEC3500 with bitsetting. It clearly says DVD-ROM at "disc type". When you look at the attachment in the first post, it says DVD+R DL, and when you check the disc with Nero infotool it says disc type dvd+R DL - booktype DVD-ROM.