Jondrew.. I love you If anyone is having problems with +R media: Try changing Booktype to DVD-ROM before burning. In DVD Decrypter this feature is under tools -> drive. If this still doesn't work, like it didn't for me, update your DVD writer's firmware and then download a bit setting utility from the manufacturer. In my case, I downloaded the LiteON Bit Setting Utility and set the "Change Booktype to" setting to DVD-ROM. Upon burning completion, the "Current Disc Bittype" changed to DVD-ROM. These DVD's now work perfect in the XBOX!! Once again, Jondrew you are the man!!!
Note: Each Xbox will read different media than others. Did you try booktyping the dvd+rs to dvd-rom? also the version of the xbox comes into play with what media it uses. this thread is pointless unless you create a section for each version and drive of the xboxs. Note: my xbox plays everything. It is a version 1.6b.