Gmap display not receiving marker location

Using gmap_geo 6.x-1.x from 2009-07-29. I have a geo CCK field set to POINT, with 'GMap' set in the CCK Display Fields. On node view, when the gmap renders, the map appears to render at the default position, not at the specific lat/lon of the node.

The issue appears to be in theme_gmap_geo_formatter(). The node has the correct location (I can manually extract the WKT). In

foreach (element_children($element) as $i) {
    $item = $element[$i]['#item'];
    gmap_geo_map_feature($item['array_for_gmap'], $item['gis type'], $map);
  }

The item is being correctly selected but it has no 'array_for_gmap' so the marker array is returned empty.

I've altered the code as follows:

   foreach (element_children($element) as $i) {
     $item = $element[$i]['#item'];
+    $geo_array = geo_wkb_get_data($item['wkb'], 'array_for_gmap');
+    $item['array_for_gmap'] = $geo_array;
     gmap_geo_map_feature($item['array_for_gmap'], $item['gis type'], $map);
   }

This works for me.