From 66e08e5f419bcd7519bed08711892a5a6d207826 Mon Sep 17 00:00:00 2001
From: Gustavo Tandeciarz <dcinzona@users.noreply.github.com>
Date: Thu, 3 Dec 2015 14:23:37 -0500
Subject: [PATCH] Removing duplicate fields from content parts fails

SingleOrDefault will throw an error when removing fields with the same name.  Should be FirstOrDefault as it is on line 64
---
 .../MetaData/Builders/ContentPartDefinitionBuilder.cs         | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Orchard/ContentManagement/MetaData/Builders/ContentPartDefinitionBuilder.cs b/src/Orchard/ContentManagement/MetaData/Builders/ContentPartDefinitionBuilder.cs
index 819680678..f2852d22e 100644
--- a/src/Orchard/ContentManagement/MetaData/Builders/ContentPartDefinitionBuilder.cs
+++ b/src/Orchard/ContentManagement/MetaData/Builders/ContentPartDefinitionBuilder.cs
@@ -43,7 +43,7 @@ namespace Orchard.ContentManagement.MetaData.Builders {
         }
 
         public ContentPartDefinitionBuilder RemoveField(string fieldName) {
-            var existingField = _fields.SingleOrDefault(x => x.Name == fieldName);
+            var existingField = _fields.FirstOrDefault(x => x.Name == fieldName);
             if (existingField != null) {
                 _fields.Remove(existingField);
             }
@@ -162,4 +162,4 @@ namespace Orchard.ContentManagement.MetaData.Builders {
             return obj;
         }
     }
-}
\ No newline at end of file
+}