Since we updated to Xcode 7.3, Faux Pas sometimes hangs on "Determining build settings...". This happens when using the Faux Pas GUI and also with the CLI. Our CI Server often times out running the Faux Pas phase - the timeout is currently set to 30 minutes. One weird observation I made, is that when the GUI app hangs, and you quit the app, that on the next launch "Determining build settings..." completes.
Issue #85 resolved