use bare raise so you get the original tb
diff --git a/Lib/plat-mac/aetools.py b/Lib/plat-mac/aetools.py
index 8d9657e..79d6958 100644
--- a/Lib/plat-mac/aetools.py
+++ b/Lib/plat-mac/aetools.py
@@ -83,7 +83,7 @@
 			desc = ae.AEGetAttributeDesc(key, '****')
 		except (AE.Error, MacOS.Error), msg:
 			if msg[0] != -1701 and msg[0] != -1704:
-				raise sys.exc_type, sys.exc_value
+				raise
 			continue
 		attributes[key] = unpack(desc, formodulename)
 	return parameters, attributes