From d6a66b2ba8ee74b59d79685924b26932d64cdaaf Mon Sep 17 00:00:00 2001
From: David Vierra <codewarrior@hawaii.rr.com>
Date: Fri, 11 Mar 2011 20:51:25 -1000
Subject: [PATCH] create Materials tag if it isn't present (old schematics)

---
 mclevel.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/mclevel.py b/mclevel.py
index 743b4bb..58d47d1 100644
--- a/mclevel.py
+++ b/mclevel.py
@@ -1407,6 +1407,8 @@ class MCSchematic (MCLevel):
     @Materials.setter
     @decompress_first     
     def Materials(self, val):
+        if not Materials in self.root_tag:
+            self.root_tag[Materials] = TAG_String()
         self.root_tag[Materials].value = val
     
     @classmethod