When trying to burn a 3.4GB ISO file to a DVD+R disc using Nero 7, the operation completes normally without any errors. However, when I try to use the disc, it appears as blank to vista. However, when I look at the physical disc it appears that it has written OK. I've updated the drivers of my Pioneer DVR-106D and still have the same problem. I've wasted so many discs now trying to get this fixed. Does anyone have any suggestions?