diff --git a/src/Umbraco.Core/CacheRefreshersResolver.cs b/src/Umbraco.Core/CacheRefreshersResolver.cs
index e6973c3d8f..31ed877e97 100644
--- a/src/Umbraco.Core/CacheRefreshersResolver.cs
+++ b/src/Umbraco.Core/CacheRefreshersResolver.cs
@@ -31,7 +31,7 @@ namespace Umbraco.Core
 		{
 			get
 			{
-				EnsureRefreshersList();
+				EnsureIdsAreTracked();
 				return Values;
 			}
 		}
diff --git a/src/Umbraco.Core/DataTypesResolver.cs b/src/Umbraco.Core/DataTypesResolver.cs
index 2d0163e8e7..024fecc1ee 100644
--- a/src/Umbraco.Core/DataTypesResolver.cs
+++ b/src/Umbraco.Core/DataTypesResolver.cs
@@ -29,7 +29,7 @@ namespace Umbraco.Core
 		{
 			get
 			{
-				EnsureRefreshersList();
+				EnsureIdsAreTracked();
 				return Values;
 			}
 		}
diff --git a/src/Umbraco.Core/ObjectResolution/LegacyTransientObjectsResolver.cs b/src/Umbraco.Core/ObjectResolution/LegacyTransientObjectsResolver.cs
index 27f2307bd2..f45e7fa9df 100644
--- a/src/Umbraco.Core/ObjectResolution/LegacyTransientObjectsResolver.cs
+++ b/src/Umbraco.Core/ObjectResolution/LegacyTransientObjectsResolver.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Concurrent;
 using System.Collections.Generic;
+using System.Linq;
 using System.Threading;
 
 namespace Umbraco.Core.ObjectResolution
@@ -20,7 +21,7 @@ namespace Umbraco.Core.ObjectResolution
 		where TResolved : class
 		where TResolver : class
 	{
-
+		
 		#region Constructors
 		
 		/// <summary>
@@ -35,10 +36,7 @@ namespace Umbraco.Core.ObjectResolution
 		protected LegacyTransientObjectsResolver(IEnumerable<Type> refreshers)
 			: base(ObjectLifetimeScope.Transient) //  new objects every time
 		{
-			foreach (var l in refreshers)
-			{
-				this.AddType(l);
-			}
+			AddTypes(refreshers);
 		}
 		#endregion
 
@@ -63,16 +61,16 @@ namespace Umbraco.Core.ObjectResolution
 		/// <returns></returns>
 		public TResolved GetById(Guid id)
 		{
-			EnsureRefreshersList();
+			EnsureIdsAreTracked();
 			return !_trackIdToType.ContainsKey(id)
 			       	? null
 					: PluginManager.Current.CreateInstance<TResolved>(_trackIdToType[id]);
 		}
 
 		/// <summary>
-		/// Populates the refreshers dictionary to allow us to instantiate a type by Id since the ICacheRefresher type doesn't contain any metadata
+		/// Populates the ids -> Type dictionary to allow us to instantiate a type by Id since these legacy types doesn't contain any metadata
 		/// </summary>
-		protected void EnsureRefreshersList()
+		protected void EnsureIdsAreTracked()
 		{
 			using (var l = new UpgradeableReadLock(_lock))
 			{
diff --git a/src/Umbraco.Core/ObjectResolution/ManyObjectsResolverBase.cs b/src/Umbraco.Core/ObjectResolution/ManyObjectsResolverBase.cs
index 2b8d1c43c7..2172fe9102 100644
--- a/src/Umbraco.Core/ObjectResolution/ManyObjectsResolverBase.cs
+++ b/src/Umbraco.Core/ObjectResolution/ManyObjectsResolverBase.cs
@@ -97,6 +97,10 @@ namespace Umbraco.Core.ObjectResolution
 		protected ObjectLifetimeScope LifetimeScope { get; private set; }
 
 		private int _defaultPluginWeight = 10;
+		private bool _supportsAdd = true;
+		private bool _supportsInsert = true;
+		private bool _supportsClear = true;
+		private bool _supportsRemove = true;
 
 		/// <summary>
 		/// Used in conjunction with GetSortedValues and WeightedPluginAttribute, if any of the objects
@@ -185,11 +189,14 @@ namespace Umbraco.Core.ObjectResolution
 		/// Removes a type.
 		/// </summary>
 		/// <param name="value">The type to remove.</param>
-		public virtual void RemoveType(Type value)
-		{	
-			EnsureCorrectType(value);
+		public void RemoveType(Type value)
+		{
+			if (!SupportsRemove)
+				throw new InvalidOperationException("This resolver does not support Removing types");
+
 			using (new WriteLock(_lock))
 			{
+				EnsureCorrectType(value);
 				InstanceTypes.Remove(value);
 			}
 		}
@@ -203,21 +210,42 @@ namespace Umbraco.Core.ObjectResolution
 			RemoveType(typeof (T));
 		}
 
+		/// <summary>
+		/// protected method allow the inheritor to add many types at once
+		/// </summary>
+		/// <param name="types"></param>
+		protected void AddTypes(IEnumerable<Type> types)
+		{			
+			using (var l = new WriteLock(_lock))
+			{
+				foreach(var t in types)
+				{
+					EnsureCorrectType(t);
+					if (InstanceTypes.Contains(t))
+					{
+						throw new InvalidOperationException("The Type " + t + " already exists in the collection");
+					};
+					InstanceTypes.Add(t);	
+				}				
+			}
+		}
+
 		/// <summary>
 		/// Adds a Type to the end of the list.
 		/// </summary>
 		/// <param name="value">The object to be added.</param>
-		public virtual void AddType(Type value)
+		public void AddType(Type value)
 		{
-			EnsureCorrectType(value);
-			using (var l = new UpgradeableReadLock(_lock))
+			if (!SupportsAdd)
+				throw new InvalidOperationException("This resolver does not support Adding new types");
+
+			using (var l = new WriteLock(_lock))
 			{
+				EnsureCorrectType(value);
 				if (InstanceTypes.Contains(value))
 				{
 					throw new InvalidOperationException("The Type " + value + " already exists in the collection");
 				};
-
-				l.UpgradeToWriteLock();
 				InstanceTypes.Add(value);
 			}
 		}
@@ -234,8 +262,11 @@ namespace Umbraco.Core.ObjectResolution
 		/// <summary>
 		/// Clears the list.
 		/// </summary>
-		public virtual void Clear()
+		public void Clear()
 		{
+			if (!SupportsClear)
+				throw new InvalidOperationException("This resolver does not support Clearing types");
+
 			using (new WriteLock(_lock))
 			{
 				InstanceTypes.Clear();
@@ -247,11 +278,14 @@ namespace Umbraco.Core.ObjectResolution
 		/// </summary>
 		/// <param name="index">The zero-based index at which the object should be inserted.</param>
 		/// <param name="value">The object to insert.</param>
-		public virtual void InsertType(int index, Type value)
-		{
-			EnsureCorrectType(value);
+		public void InsertType(int index, Type value)
+		{			
+			if (!SupportsInsert)
+				throw new InvalidOperationException("This resolver does not support Inserting new types");
+
 			using (var l = new UpgradeableReadLock(_lock))
 			{
+				EnsureCorrectType(value);
 				if (InstanceTypes.Contains(value))
 				{
 					throw new InvalidOperationException("The Type " + value + " already exists in the collection");
@@ -278,5 +312,24 @@ namespace Umbraco.Core.ObjectResolution
 				throw new InvalidOperationException("The resolver " + this.GetType() + " can only accept types of " + typeof(TResolved) + ". The Type passed in to this method is " + t);
 		}
 
+		protected virtual bool SupportsAdd
+		{
+			get { return _supportsAdd; }
+		}
+
+		protected virtual bool SupportsInsert
+		{
+			get { return _supportsInsert; }
+		}
+
+		protected virtual bool SupportsClear
+		{
+			get { return _supportsClear; }
+		}
+
+		protected virtual bool SupportsRemove
+		{
+			get { return _supportsRemove; }
+		}
 	}
 }
\ No newline at end of file
diff --git a/src/Umbraco.Web/ApplicationEventsResolver.cs b/src/Umbraco.Web/ApplicationEventsResolver.cs
index ad099a058d..b215485fb4 100644
--- a/src/Umbraco.Web/ApplicationEventsResolver.cs
+++ b/src/Umbraco.Web/ApplicationEventsResolver.cs
@@ -30,24 +30,24 @@ namespace Umbraco.Web
 			get { return Values.OfType<IApplicationEventHandler>(); }
 		}
 
-		public override void Clear()
+		protected override bool SupportsClear
 		{
-			throw new NotSupportedException("This class does not support this method");
+			get { return false; }
 		}
 
-		public override void AddType(Type value)
+		protected override bool SupportsAdd
 		{
-			throw new NotSupportedException("This class does not support this method");
+			get { return false; }
 		}
 
-		public override void InsertType(int index, Type value)
+		protected override bool SupportsInsert
 		{
-			throw new NotSupportedException("This class does not support this method");
+			get { return false; }			
 		}
 
-		public override void RemoveType(Type value)
+		protected override bool SupportsRemove
 		{
-			throw new NotSupportedException("This class does not support this method");
+			get { return false; }
 		}
 
 	}
diff --git a/src/umbraco.cms/businesslogic/Packager/Installer.cs b/src/umbraco.cms/businesslogic/Packager/Installer.cs
index b55ea4715d..b58f20290b 100644
--- a/src/umbraco.cms/businesslogic/Packager/Installer.cs
+++ b/src/umbraco.cms/businesslogic/Packager/Installer.cs
@@ -343,8 +343,15 @@ namespace umbraco.cms.businesslogic.packager
                     template.Template masterTemplate = template.Template.GetByAlias(master);
                     if (masterTemplate != null) {
                         t.MasterTemplate = template.Template.GetByAlias(master).Id;
-                        if (UmbracoSettings.UseAspNetMasterPages)
-                            t.SaveMasterPageFile(t.Design);
+						//SD: This appears to always just save an empty template because the design isn't set yet
+						// this fixes an issue now that we have MVC because if there is an empty template and MVC is 
+						// the default, it will create a View not a master page and then the system will try to route via
+						// MVC which means that the package will not work anymore.
+						// The code below that imports the templates should suffice because it's actually importing 
+						// template data not just blank data.
+
+						//if (UmbracoSettings.UseAspNetMasterPages)
+						//	t.SaveMasterPageFile(t.Design);
                     }
                 }
                 // Master templates can only be generated when their master is known