I have seen several of the “Queue again later” messages in posts. Some folks say one or two should not be a problem, but I have seen some that have 20 or so. I don’t know and have not seen a definitive answer for your problem, but I tend to think it has something to do with the drive controller or something associated with how the drive is handled.
Have you tried burning a smaller file to see it you system works at all?
Since I don’t know, all I can do is guess. You show your 2 CD/DVD devices on a Port 5–I don’t know why it shows that, but the CD is showing a DMA off situation. How about disconnecting the CD and just leaving the DVD burner and make sure it is set as master. Try burning that way to see if it helps.
You might also try running the Nero Drive Speed utlity. Perhaps something about how your drive behaves concerning spin down time or whatever you might think would affect it’s readiness to accept data could be changed.
If neither of those helps, you might try (just for the heck of it) turning off the Buffer underrun protection.
I’m sorry I don’t have an answer, but maybe you will find out what is going on and solve this problem for other folks.