Hi,

>goApp is a public variable.
>goApp have a reference of timer in goApp.aReference[]
>Timer.Timer()
>goApp.Shutdown()

Fox probably doesn't like trying to return to an object that's been destroyed. Maybe use event binding? E.g:

DEFINE CLASS oApp as Container
oTimer = CREATEOBJECT("Timer")
oTimer.Interval = 1000
oTimer.Enabled = .T.
PROCEDURE INIT()
BINDEVENT(This.oTimer,"Timer",this,"Shutdown")
ENDPROC
PROCEDURE ShutDown()
QUIT
ENDPROC
ENDDEFINE

oX = CreateObject("oApp") works.
Regards,
Viv