Index: gmap_plugin_style_gmap.inc
--- gmap_plugin_style_gmap.inc Base (BASE)
+++ gmap_plugin_style_gmap.inc Locally Modified (Based On LOCAL)
@@ -128,7 +128,7 @@
     // Determine fieldname for marker field.
     if ($this->options['markers'] == 'field') {
       $marker_field_obj = $this->view->display_handler->get_handler('field', $this->options['markerfield']);
-      $marker_field = 'field_' . $marker_field_obj->field;
+      $marker_field = $marker_field_obj->field_alias;
     }
 
     // Determine rmt field.
@@ -245,8 +245,8 @@
           }
           elseif ($this->options['markers'] == 'field') {
 
-            if (!empty($row->{$marker_field}) && !empty($row->{$marker_field}[0]['raw']['value'])) {
-              $markername = $row->{$marker_field}[0]['raw']['value'];
+            if (!empty($row->{$marker_field})/*&& !empty($row->{$marker_field}[0]['raw']['value'])*/) {
+              $markername = $row->{$marker_field};
             }
           }
           if (!isset($offsets[$markername])) {