i dont use other custom poi other than trapster's speed cam, they only appear on route and not while browsing (not sure if it has to do with "distance setting" from poi loader). as for garmin's original poi icons, they appear fine on mine at the info screen where the map is divided. i also get the blue dot if i select custom poi all the way at bottom from the drop box, then identifies the blue dot when i click on it.

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link is for zipped trapster speed cam & icons thats working for me