Two rows of lights in the middle section will not work.  Fuses were checked and are OK.  There are no missing lights or obvious burned out lights.  I have called the manufacturer as directed by a note in the package and got a recording that they are closed.  I left my name and phone number.  I do not have time to fool around with this.  My wife & I are in our 70s and are having 14 family members for Christmas Eve dinner.  If this tree needs to be replaced, it will need to be expedited.