Entity Selections in Wildfire 5.0 sketcher

I work with Pro/E wildfire 5.0 (M010) release. When i work with sketcher, whenever i select an entity either or select entities to trim or chamfer they are not highlighted. but they are displayed as 1 selected/ 2 selected and so on in the selection filter display area. i had tried all the possible ways like changing the display options in the View menu, everything. Nothing works out. Help me