I'm running into this same issue with Compressor 4.07 on a new MacBookPro with Retina and external Super Drive. How did you solve it?
It makes files for DVDs OK but when I add the Create DVD function, it hangs up close to the end. I let it run all night to see if it just needed time but nothing had changed over 8 hours later.
Did you do something to make it work for you or did it just need time?