S        This expression returns the error message for an On error event.

Outside of error events, the expression will be blank.


In Blue Server, error messages will start with:

  • [Fusion event #X] Error was created by an action, e.g. Host action with port 0.
    X is the event line number in Fusion event editor, global events, or behavior events. Which event sheet it is, is not specified.
  • [ticker] In single-threaded mode, this is an error reported from the Lacewing event system ticking (processing new incoming messages).
  • [handler] An error reported from a second thread, like ping timer or, in multi-threaded mode, Lacewing event system ticking.