Grandpa bruce,THANK YOU, THANK YOU. it worked!
After I made the file, I went to it and right clicked on "burn with creator".
It opened up Roxio creator, but under the "Data-copy" tab.
Then Burn disc image, if I am reading my notes correctly.
The only thing I can see that is different is that I just opened up MyDVD instead of letting video wave open it., because I tried before to just burn to file, but it wouldnt work.
Also after I burnt The first copy I went back to do another, but then I changed my menu first, then added my movie from the file, and I got the encoding error?? Its hard to believe that software is that picky.
I did make a change in my project, and burnt another disc, per your instructions, with no problems.