I sent a campaign over the weekend. It looks correct to me both before I sent it and now when I look at the response, but one of the contacts who received it says the email was completely blank. I'm using Chrome Version 57.0.2987.133.
I am happy to look into this for you. A few questions: Which Sub account an mailing are you looking into? What system is the contact who received the blank email using? Did the images show up after they cleared their browser cache and cookies?