Import the MacOS toolbox modules from the Carbon package.
diff --git a/Mac/Lib/macfsn.py b/Mac/Lib/macfsn.py
index 3c12646..c496903 100644
--- a/Mac/Lib/macfsn.py
+++ b/Mac/Lib/macfsn.py
@@ -2,7 +2,7 @@
 API calls with Navigation Services"""
 import macfs
 import struct
-import Res
+from Carbon import Res
 try:
 	import Nav
 except ImportError: