Index: html/nfsen.php
--- html/nfsen.php.orig
+++ html/nfsen.php
@@ -695,7 +695,7 @@ switch ($label) {
 		}
 		if ( count($plugins) > 0 ) {
 			$plugin_name = $plugins[ $_SESSION['sub_tab'] ];
-			$include_file = "$FRONTEND_PLUGINDIR/$plugin_name" . ".php";
+			$include_file = "plugins/$plugin_name" . ".php";
 			include($include_file);
 			$plugin_parse_input = $plugin_name . "_ParseInput";
 			$plugin_run 	    = $plugin_name . "_Run";
