<div dir="ltr">This is getting really annoying. The "classic" crash has happened to me
several times today. The common feature seems to be (for me)
attempting to open a file using the "Open Document" from the top-level
(Mac) File menu when (some number of) other editor windows are already
open. The manifestation of the crash is that an empty window appears
(where there should be a list of files) along with the spinning ball.
At that point the only thing I can do is force a quit, delete the files
(as noted in other posts), and restart R. I'm using R3.3.2 R.app GUI
1.68 (7288) on a MacBook-Pro under Sierra 10.12.3. I'm attaching a
crash log from today in the hope that someone can figure this out.</div>