Nero can be a bit difficult at times, I have had many issues with it not burning the file whilst other software has no problem with it...
I use dvdsanta as well...here is a tutorial and a link to it...
http://www.gnutellaforums.com/252143-post6.html
Here is a tutorial for Nero, see if there is anything you are missing...
http://www.gnutellaforums.com/tips-t...7-premium.html
If your problems persists try these forums
AfterDawn.com: Forums they have got some really good advice...
