Hi, I just bought a 50 Disc Spindle of Ritek DVD-R Inkjet Printables. I have burned 8 so far with no problems, but when I play 2 of them they freeze up on my Sony DVP NS575P DVD Player. They play fine on my cheapo dvd player but freeze up on my Sony. I am burning at 4x with Nero and have used Ritek DVD-R and Ritek DVD+R for some time now with no problems. I used DVD Identifyer and it said the discs are Ritek G05. Does anyone know what the problem is? Is it my Sony DVD player? Thanks in advance!