When deleted an application is, of a scenario that updated will be, assumptions the frontend makes.
In terrible errors result it does. Check the existence of application it does not prior to attempting the update. Ambiguous the message is. Web scenario belongs to no one, as application is no more. No host, no home...

Programming error it is. Fixed it must be.

Force you must use, frotend-padawan.

(In trunk present it is)