From 613783add2a733dacf7bbf99af347a226c0ef11b Mon Sep 17 00:00:00 2001
From: hartvig <unknown@kiln.example.com>
Date: Thu, 1 Jul 2010 11:46:30 +0000
Subject: [PATCH] Fixes 27939

[TFS Changeset #71811]
---
 .../presentation/umbraco/Trees/TreeDefinitionCollection.cs    | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/umbraco/presentation/umbraco/Trees/TreeDefinitionCollection.cs b/umbraco/presentation/umbraco/Trees/TreeDefinitionCollection.cs
index 093608bf36..15985c4c1b 100644
--- a/umbraco/presentation/umbraco/Trees/TreeDefinitionCollection.cs
+++ b/umbraco/presentation/umbraco/Trees/TreeDefinitionCollection.cs
@@ -103,7 +103,7 @@ namespace umbraco.cms.presentation.Trees
             return this.FindAll(
                 delegate(TreeDefinition tree)
                 {
-                    return (tree.App.alias.ToLower() == appAlias.ToLower());
+                    return (tree.App != null && tree.App.alias.ToLower() == appAlias.ToLower());
                 }
             );
         }
@@ -118,7 +118,7 @@ namespace umbraco.cms.presentation.Trees
             return this.FindAll(
                 delegate(TreeDefinition tree)
                 {
-                    return (tree.App.alias.ToLower() == appAlias.ToLower() && tree.Tree.Initialize);
+                    return (tree.App != null && tree.App.alias.ToLower() == appAlias.ToLower() && tree.Tree.Initialize);
                 }
             );
         }