Why is my building log stating that 'The formatting was canceled by the user'?

I have been burning dvd's for a while. This is the first time I had to compress my FCP movie down and bring it into DVDSP several times. I believe to have everything correct. It simulates perfectly, but when I burn and build, the log states that "The formatting job was canceled by the user". It will no longer play in the dvd player. I do not know what I did for this to happen. Nor do I know how to fix it. I am kind of new at DVDSP so please be patient with me. Thank you for your time!