Christine,
Thank you for your prompt reply. I have deactivated all of my plugins and I was able to add more pictures. I’m a little confused as to why this started happening now. I had the same plugins as when I first started the website and I have not had this problem before. I guess for my plugin problem I will try to activate each of them one by one and see which one is causing the problem. Anyway, your help is appreciated. Thank you.