Make ContentVersion Id node optional. Improve error message slightly.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/xml.cc b/src/xml.cc
index 35c4fe12..7a2bee2e 100644
--- a/src/xml.cc
+++ b/src/xml.cc
@@ -31,7 +31,7 @@ XMLNode::xml_node (string name)
 	if (n.size() > 1) {
 		throw XMLError ("duplicate XML tag " + name);
 	} else if (n.empty ()) {
-		throw XMLError ("missing XML tag " + name);
+		throw XMLError ("missing XML tag " + name + " in " + _node->get_name());
 	}
 	
 	return n.front ();