I just got a 50 stack of Ritek DVD+R there are the ones with that saw Ridata with the arrow on the front and i am using shrink and nero to back them up and when shrink gets done and starts to burn it says cant perform Disk at once.. Is this media bad or what. I have used Memorex and Imation to back up like 200 movies with no problem so i got these Ritek disks thinking they were the best cause i have heard so much about them..... i am a little upset.. someone help