After you hit "save" you will be prompted to save images only or images with HTML.
It only gives the option to save as a .gif or .png and then closes the
window after I hit "save". I'm not offered to save as anything other than
an image file
Can you show a screen shot of the window that appears when you hit 'save'?
You were right. I was clicking "done" not "save". Thank you for your help.