Confused about standalone web app console error

I receive this message on the console after starting a standalone web app. What does it mean?

[code]EndException

REALbasic.Quit%%i8
WebApplication.Quit%%o
App.Event_Open%%oA1s
WebApplication.Event_Run%i8%oA1s

ConsoleApplication._CallFunctionWithExceptionHandling%%op

RuntimeRun
REALbasic._RuntimeRun
_Main
main
[/code]

Are you calling Quit() ?

It dawned on me that I have a settings file that isn’t included in the build process. Copying that, the error does not happen.