StepMania5.1.0 crashes on startup on macOS Sierra · Issue #1299 · stepmania/stepmania

Content of the StepMania5 log file in ~/Library/Logs/StepMania 5/log.txt: 00:00.286: StepMania5.1.0 00:00.286: Compiled 20160905 @ 12:22:23 (build 361573f) 00:00.286: Log starting 2016-09-21 16:46:...