@Skyriagis wrote:
Every time I try to save a file after editing it, I get this message: 'Remove "filename" from everyone's Dropbox account and all devices'.
That's the message you receive when you delete a file from a shared folder. I don't know what application you're using, but best guess is that when saving a file that already exists, the application first deletes the copy that's there and then saves a new file in its place. Since the file is first being deleted, Dropbox sees that and prompts you.
Do a test. Make a copy of the file and place it somewhere outside of Dropbox. Then go edit the copy in the shared folder, save it, and when you receive the prompt again, confirm the removal. See if the application continues to save the file. If so, mystery solved. If not and the file was deleted, you have a copy saved that you can put back.