7.4 Beta 2 Mac OS 10.12.2
This has been happening at random intervals since the release of 7.4 Beta 1, but have not had time to submit a crash report. This happens most often when switching layouts, but this one happened soon after opening Greek Grammar Beyond the Basics to the article on Imperatival Participles.
logos.log indicates a Mono error.
6888.Apple Crash Report.rtf
7633.LogosLogs.jackcav.20170113-210149.zip
Attempted to restart Logos, but nothing visible happened.
3225.LogosLogs.jackcav.20170113-211009.zip
Second restart attempt worked as expected.