From 3ebb21391608cbb0936a4806e6ee3b65b206c1d7 Mon Sep 17 00:00:00 2001
From: Shannon Deminick <sdeminick@gmail.com>
Date: Wed, 6 Feb 2013 19:18:42 +0600
Subject: [PATCH] Patches installer issue.

---
 .../umbraco.presentation/install/utills/p.aspx.cs         | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/src/Umbraco.Web/umbraco.presentation/install/utills/p.aspx.cs b/src/Umbraco.Web/umbraco.presentation/install/utills/p.aspx.cs
index d7c99e7f47..8f27a85dd7 100644
--- a/src/Umbraco.Web/umbraco.presentation/install/utills/p.aspx.cs
+++ b/src/Umbraco.Web/umbraco.presentation/install/utills/p.aspx.cs
@@ -1,9 +1,11 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Security.Authentication;
 using System.Web;
 using System.Web.UI;
 using System.Web.UI.WebControls;
+using Umbraco.Core;
 using umbraco.DataLayer.Utility.Installer;
 using umbraco.DataLayer;
 
@@ -57,6 +59,12 @@ namespace umbraco.presentation.install.utills
         [System.Web.Script.Services.ScriptMethod]
         public static string installOrUpgrade()
         {
+            //if its not configured then we can continue
+            if (ApplicationContext.Current == null || ApplicationContext.Current.IsConfigured)
+            {
+                throw new AuthenticationException("The application is already configured");
+            }
+
             Helper.setProgress(5, "Opening database connection...", "");
 
             IInstallerUtility installer;