Marci

I'm wondering what format you have used to save your pictures. I use jpg format, and have not had a problem. If you are using something else, try saving the picture as a jpg file instead. (File menu, Save as, and change the letters after the period to jpg, save)
The box with the x indicates that the picture loading process is trying to post your picture. If that box wasn't there, I would think something was wrong with the process.
Good luck.
Laura