Check server settings for file size limits on uploads or otherwise? Do you have any images or other files over 10mb that have successfully uploaded?

Click on one of your newest fragments and then 'Move' you'll see the page title followed by the Page name. If the page name has a long list of trailing '1' and '2' numbers, you've maxed out AEM's file renamer. When this happened to an author of mine, I was unable to use move to rename them. I found ...