[kupfer: 28/31] objects: Better exception message on failed ComposedLeaf

[Ulrik Sverdrup <usverdrup src gnome org>]

commit 1e795c6807d199bd39ecad2b836c33e5d4dd0689
Author: Ulrik Sverdrup <ulrik sverdrup gmail com>
Date:   Thu Dec 31 13:14:34 2009 +0100

    objects: Better exception message on failed ComposedLeaf

 kupfer/objects.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/kupfer/objects.py b/kupfer/objects.py
index 8a7f84b..a331b14 100644
--- a/kupfer/objects.py
+++ b/kupfer/objects.py
@@ -1193,7 +1193,7 @@ class ComposedLeaf (RunnableLeaf):
 		self.object[:] = [puid.resolve_unique_id(I) for I in state["object"]]
 		if (not self.object[0] or not self.object[1] or
 				(I is None) != (self.object[2] is None)):
-			raise InvalidDataError
+			raise InvalidDataError("Parts of %s not restored" % unicode(self))
 
 	def get_actions(self):
 		action = self.object[1]