This is most likely because you have an application filter set in the Security settings in the Smartlaunch Server preventing an application/window with a certain name to appear.
If this is a mistake you need to remove the application filter to be able to show the window/application.
The above suggestions is only pointed to those who get a log message which says ‘program x’ was closed.
Unexpected closures may occur in various different connections and with a lot of different causes