I have a NEC 3500AG & according to all the web sites I have found, this burner is compatible with DVD+RW discs.
Burnt a couple of DVD files OK & these played OK on my DVD player…but when I come to erase the discs using Nero, it states that they are not erasable discs.
Downloaded DVDINFO & DVD+RW is not ticked…
SO should these discs work or not ? confused 
Welcome to CD Freaks.
Yes of course the 3500 can handle +RW media. What could be an issue is other software installed , like Alcohol.
You can always try Nero’s CD-DVD Speed or ImgBurn to erase them.
you might have made the disc non-erasable through nero.
drive should not have any trouble erasing…I’m on my 3,000th burn soon, with not one coaster…even with crappy media.
i still use it over the sammy, maybe when it dies, or if it dies, i will switch
If these DVD+RWs were booktyped to DVD-ROM, you need to full erase/format them first.
Try with Imgburn.