I usually save my Daily Reading workspace when I am finished with it for the day. Both in 10.1.3, and now in 10.1.5, Accordance will occasionally be unresponsive and will not "Save As" when desired. It doesn't crash — it just won't save. I haven't found a pattern to this, but have not had it happen when I have very recently rebooted, or very recently restarted Accordance. Accordance remains functional in all other respects.
late 2008 Unibody 2.5.3GHz Core Duo
8GB RAM 750G HD