I've had a look at your Capx...the reason is that your "TExt2" object( the ammo counter ) is outside of the window dimensions..
in your layout the "text2" object is on the HUD layer but its coordinates are
which is outside of the window view dimensions..which are 640,480
change one or both of the window size dimensions or move the Text 2 object to inside of the 640 range and it should be visible
you can use the ANCHOR behaviour to make sure that at runtime the objects are set to a fixed screen position..
Hope that helps