I had problems with Nero 6 whilst burning anything(DVD/CD)I then started getting InCD error messages,had a look round the net and found a different version of InCD,installed it and (touch wood)haven't had any repeat hassles.
to make sure DMA (direct memory access) is enabled go to my computer right click on it, scroll down to properties click on that. click on the hardware tab, click on device manager, look for the ide/atapi controllers, expand the list, right click on the primary ide entry, then click on properties, go to the advanced settings tab and make sure dma is is checked/ or dma if available.
I had a similar problem and it was due to me installing InCD with Norton Antivirus running. I uninstalled InCD and reinstalled it with NAV disabled. Audio LaLa's advice is highly relevant if having playback problems of movie DVD's.
Also ensure that you have no remnants of any other burning software on the computer.
Everytime i try to shut down my computer i get an ending program dialog box appear.Something called CCAPP is still running,and when i click on the end now option,my whole pc freezes on saving your settings,and can then only be shut down by turning it off at the main on-off button.As far as i can tell,CCAPP is something to do with Norton anti virus,any ideas how to stop this.Thankyou.