- Outside the editor, create an empty project folder e.g. "Test", create "Assets" folder in it.
- Add a .cs script which will fail to compile
- Open Unity Editor, select "Open", select folder "Test" that was created.
- Navigate to Build Settings window: File -> Build Settings
- Click Player Settings.

Expected: No error messages
Actual: Notice error messages in console. (See attached log.)

Regression from 5.3 and 5.2