Merge with 6.0.6

src/Umbraco.Tests/PublishedContent/PublishedContentTestBase.cs

@@ -24,7 +24,7 @@ namespace Umbraco.Tests.PublishedContent
             //need to specify a custom callback for unit tests
             PublishedContentHelper.GetDataTypeCallback = (docTypeAlias, propertyAlias) =>
                 {
-                    if (propertyAlias == "content")
+                    if (propertyAlias.InvariantEquals("content"))
                     {
                         //return the rte type id
                         return Guid.Parse(Constants.PropertyEditors.TinyMCEv3);

src/Umbraco.Tests/PublishedContent/PublishedContentTests.cs

@@ -240,6 +240,10 @@ namespace Umbraco.Tests.PublishedContent
 			var propVal2 = doc.GetPropertyValue<IHtmlString>("content");
 			Assert.IsTrue(TypeHelper.IsTypeAssignableFrom<IHtmlString>(propVal2.GetType()));
 			Assert.AreEqual("<div>This is some content</div>", propVal2.ToString());
+
+            var propVal3 = doc.GetPropertyValue("Content");
+            Assert.IsTrue(TypeHelper.IsTypeAssignableFrom<IHtmlString>(propVal3.GetType()));
+            Assert.AreEqual("<div>This is some content</div>", propVal3.ToString());
 		}
 
 		[Test]

src/umbraco.cms/businesslogic/ContentType.cs

@@ -147,7 +147,8 @@ namespace umbraco.cms.businesslogic
 
         public static Guid GetDataType(string contentTypeAlias, string propertyTypeAlias)
         {
-            var key = new System.Tuple<string, string>(contentTypeAlias, propertyTypeAlias);
+            //propertyTypeAlias needs to be invariant, so we will store uppercase
+            var key = new System.Tuple<string, string>(contentTypeAlias, propertyTypeAlias.ToUpper());
 
             
             return PropertyTypeCache.GetOrAdd(