I have same problem with TW 6,5 not previous versions. Also sometimes not shown arrows on the sceneviewer
Smile to life...
Oh yes forgot to mention i have 6 radar icons with 6 scenes but only the blue radar flash light thing shows up and not the little round red radar icons.
I've got the same problem often..try deleting the radars, restart the program and try again...Also you can try do not change the default color, first put them on a map, make one preview and then change the radar color..Sounds funny but it works for me :)
Thanks DantE for the reply. Tried what you said and still does the same thing. By the way i was using 6.50 I will just redo it use version 6 because i never had radar problems with that version but hey you never know. I will reply to give an update for those that might getting the same bug.