Over the last few days I get a pop-up telling me my Auto-save location has changed. To be honest, I didn't know I had one. The only thing that has changed in my usage recently is that after 10.2 was released, I linked my files to Dropbox, and then unlinked them after the first few crashes that I experienced. I have posted a screenshot of the message - hopefully someone wiser than me has an answer. It's not a problem per se, just a tad annoying.