Finder stacked icons in icon view causes finder to crash
As tubedogg has mentioned, it is the .DS_Store which stores the information related how the Finder formats a particular folder's view.  By deleting the .DS_Store file using Terminal.app, you will reset the view options of that folder.

However, if you are not comfortable using the terminal, you can go to Finder, and open a new window from the File menu: File &gt; New Finder Window.

Now, click on your home folder in the sidebar, and then set the window view to column mode by clicking the button shown in the following screenshot, or by going to the View menu and selecting As Columns.



Navigate to your camera uploads folder, and select one of the images in the folder, just to make sure that the Camera Uploads folder is selected.  Next, from the View menu, change some view parameters, such as Arrange By, and then change the view to List (all this is just so that the .DS_Store file gets overwritten with new changes)

No guarantee that it will work, but it's worth a shot.



Having said all that, the simplest way to reset it is just to simply use the terminal command that tubedogg suggested. However: I would recommend against the -rf. There is no need for the force &amp; recursive flags.  It just adds extra risk if something were to be mistyped. I'd suggest the following:

rm "/Users/$(whoami)/Dropbox/Camera Uploads/.DS_Store"