Help with photos
 

For some reason, when inserting photos, I'm not able to choose "Large" when choosing the size to display the photo. The way I have my layout set up, I can't insert a photo larger than 550 pixels wide. I uploaded a photo that was about 800 pixels wide, then went to insert it. My only choice was a medium at 300 or the actual size. The large option was greyed out. Why would this be? I have my wordpress media options set to max width 550 for large photos; so why wouldn't this option be available to use??

In WordPress go to Settings > Media and you will see the Large Size settings. If the size of your image is less than the dimensions there the Large selection will not be available. In other words Full Size = Large.