Hi Jeroen,
It sounds like there's a VI with its Window behaviour set to "Modal". It's panel is open, but program execution is somewhere else.
One way to deal with this recurring situation might be to open the Modal VI in edit mode and change it's "Window Behaviour" from "Modal" to "Floating" - see VI Properties\Windows Appearance\Customize. It will still pop-up and stay in foreground when it executes, but it won't block mouse clicks on underlying panels!
(it will behave just like the task-manager window.) Once your app is debugged, you'll probably want to set the VI back to Modal behaviour.
Cheers!
Message Edited by tbd on 03-10-2007 12:11 AM
"Inside every large program is a small program struggling to get out." (attributed to
Tony Hoare)