When I try to record from VHS to DVD I get message.. "Since the disc has invalid information,no more title list cannot be recorded" I have tried new DVD-R discs as recommended and even formatted them on my laptop to make sure there is nothing on them... no difference.. every so often it will record one DVD then not work again for ages! Samsung told me to go into "dubbing" on the menu, but there is no suc option... HELP!!!