kathrynpalumbophoto on "Having difficulty add/move set of thumbnail images to already existing displays"

I am having a difficult time uploading photos to my gallery. Yesterday I was able to add photos to already existing galleries, but am not able to today.
I am trying to add/move a set of thumbnail images to already existing displays in my gallery so that that they can be displayed in a full-size carousel view. The process I used to add thumbnails yesterday is not working today. (Mind you it was a fluke that I figured it out in the first place.)
I also followed the instructions on creating a static home page but no images would load.
Any help would be appreciated.
Many thanks,
Kathryn