I accidentally created a stack by moving one notebook onto another. Now, I can't seem to get rid of the stack or get the notebook out of the stack. I did some quick searching and it seemed that people were suggesting that you can get rid of a stack by dragging the notebook out of the stack. But it won't let me drag the notebook out--whenever I drag the notebook,it only gives me the option of dragging it onto another notebook (thereby creating another stack.) If I drag it anywhere else, it just goes back to its place. (Incidentally, this whole problem began when I was trying to move notebooks into a different order--something else evernote does not seem to allow me to do--and instead it created a stack.) Any thoughts would be great. Thanks in advance.