While using the ArcView Tracking Analyst extension, the display of incoming GeoEvents pauses when a modal dialog box is opened.
Tracking Analyst caches GeoEvents if a modal dialog box is opened. When the modal dialog box is closed, the display will catch up starting at the last GeoEvent obtained before the dialog box was opened.
Avoid opening modal dialog boxes while the Tracking Analyst is processing incoming data from a feed.
This is especially problematic if the modal dialog box is opened as part of an Action script.