I'm in trouble with save feature. When I save my documents, manuscripts hangs very often. I have a log file (https://www.dropbox.com/s/2j7be4hlk6qzbuy/Log.txt?dl=0) It seems deadlock... A method to reproduce this bug is open your documents (I have equations & Section & Subsection & Paragraphs) and press Cmd + S many times then mouse icon become rainbow. Only way to return to normal is just force quit.