Index: units/links/link_tag_processor.php
===================================================================
--- units/links/link_tag_processor.php	(revision 14817)
+++ units/links/link_tag_processor.php	(working copy)
@@ -235,7 +235,8 @@
 			$status = $link_visit->isLoaded() ? $link_visit->Update() : $link_visit->Create();
 		}
 
-		$url = $object->GetDBField('Url');
+		$url_field = $this->Application->GetVar('url_field');
+		$url = $object->GetDBField($url_field);
 		if (!preg_match('/^(http|ftp|mailto:)(.*)/U', $url)) {
 			$url = 'http://'.$url;
 		}