Hello! When dealing with subpanel controls, the calling and called VIs are linked together and even when they are two separate programs, the subVI front panel is only displayed in the subpanel container when the main VI is running. When the Main VI is stopped, the subVI's front panel is removed from the subpanel control.
Check this <a href="http://digital.ni.com/public.nsf/websearch/DE45BD35AFE818E2862565FB00592B31?OpenDocument";>link</a> out! Hope this helps! SVences Applications Engineer National Instruments
