Hi all. I have had problems with the following media: Traxdata 2.4 x DVD+R Bulpaq 2.4 x DVD+R Arita 4 x DVD+R These discs are all manufactured by RITEK. Using the Pioneer 106 and the Sony DW-U10A, the discs burn fine but cannot be read afterwards. I am not using simulation. My software is VOB Instant CD/DVD v6.5. I have had a lot of experience with DVD-R but have only succesfully written a Datawrite DVD+R up until now. Has anybody else experienced these problems? Does anybody have a solution as I am loathe to trash 50 blank discs? This is my first post. I have found these forums very useful for months and am spreading the word. A pre-emptive cheers to you all, Max.