diff --git a/MediaBrowser.Controller/Entities/BaseItem.cs b/MediaBrowser.Controller/Entities/BaseItem.cs
index 90427de75d..ee562d8b49 100644
--- a/MediaBrowser.Controller/Entities/BaseItem.cs
+++ b/MediaBrowser.Controller/Entities/BaseItem.cs
@@ -1577,6 +1577,11 @@ namespace MediaBrowser.Controller.Entities
 
             foreach (var newImage in images)
             {
+                if (newImage == null)
+                {
+                    throw new ArgumentException("null image found in list");
+                }
+
                 var existing = existingImages
                     .FirstOrDefault(i => string.Equals(i.Path, newImage.FullName, StringComparison.OrdinalIgnoreCase));
 
diff --git a/MediaBrowser.Controller/Entities/Movies/Movie.cs b/MediaBrowser.Controller/Entities/Movies/Movie.cs
index 4c1aac7006..b3774cfe02 100644
--- a/MediaBrowser.Controller/Entities/Movies/Movie.cs
+++ b/MediaBrowser.Controller/Entities/Movies/Movie.cs
@@ -1,6 +1,7 @@
 using MediaBrowser.Controller.Providers;
 using MediaBrowser.Model.Configuration;
 using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Users;
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -8,7 +9,6 @@ using System.Linq;
 using System.Runtime.Serialization;
 using System.Threading;
 using System.Threading.Tasks;
-using MediaBrowser.Model.Users;
 
 namespace MediaBrowser.Controller.Entities.Movies
 {
diff --git a/MediaBrowser.LocalMetadata/Savers/MovieXmlSaver.cs b/MediaBrowser.LocalMetadata/Savers/MovieXmlSaver.cs
index 6fe9f88f04..cad08e6383 100644
--- a/MediaBrowser.LocalMetadata/Savers/MovieXmlSaver.cs
+++ b/MediaBrowser.LocalMetadata/Savers/MovieXmlSaver.cs
@@ -19,11 +19,13 @@ namespace MediaBrowser.LocalMetadata.Savers
     {
         private readonly IItemRepository _itemRepository;
         private readonly IServerConfigurationManager _config;
+        private readonly ILibraryManager _libraryManager;
 
-        public MovieXmlSaver(IItemRepository itemRepository, IServerConfigurationManager config)
+        public MovieXmlSaver(IItemRepository itemRepository, IServerConfigurationManager config, ILibraryManager libraryManager)
         {
             _itemRepository = itemRepository;
             _config = config;
+            _libraryManager = libraryManager;
         }
 
         public string Name
@@ -52,6 +54,15 @@ namespace MediaBrowser.LocalMetadata.Savers
             // Check parent for null to avoid running this against things like video backdrops
             if (video != null && !(item is Episode) && !video.IsOwnedItem)
             {
+                // If it's a plain video, skip if content type is unset (unless editing)
+                if (video.GetType() == typeof(Video))
+                {
+                    if (updateType < ItemUpdateType.MetadataEdit && string.IsNullOrEmpty(_libraryManager.GetContentType(video)))
+                    {
+                        return false;
+                    }
+                }
+                
                 return updateType >= ItemUpdateType.MetadataDownload;
             }
 
diff --git a/MediaBrowser.Model/Configuration/ServerConfiguration.cs b/MediaBrowser.Model/Configuration/ServerConfiguration.cs
index ba5b6a122f..6c941e8048 100644
--- a/MediaBrowser.Model/Configuration/ServerConfiguration.cs
+++ b/MediaBrowser.Model/Configuration/ServerConfiguration.cs
@@ -32,6 +32,12 @@ namespace MediaBrowser.Model.Configuration
         /// <value><c>true</c> if [enable internet providers]; otherwise, <c>false</c>.</value>
         public bool EnableInternetProviders { get; set; }
 
+        /// <summary>
+        /// Gets or sets a value indicating whether this instance is port authorized.
+        /// </summary>
+        /// <value><c>true</c> if this instance is port authorized; otherwise, <c>false</c>.</value>
+        public bool IsPortAuthorized { get; set; }
+
         /// <summary>
         /// Gets or sets the item by name path.
         /// </summary>
diff --git a/MediaBrowser.Server.Implementations/Channels/ChannelManager.cs b/MediaBrowser.Server.Implementations/Channels/ChannelManager.cs
index d88625396e..c12a1161ba 100644
--- a/MediaBrowser.Server.Implementations/Channels/ChannelManager.cs
+++ b/MediaBrowser.Server.Implementations/Channels/ChannelManager.cs
@@ -1,6 +1,4 @@
-using System.Net;
-using System.Text;
-using MediaBrowser.Common.Extensions;
+using MediaBrowser.Common.Extensions;
 using MediaBrowser.Common.IO;
 using MediaBrowser.Common.Net;
 using MediaBrowser.Controller.Channels;
@@ -10,7 +8,6 @@ using MediaBrowser.Controller.Entities;
 using MediaBrowser.Controller.Library;
 using MediaBrowser.Controller.Localization;
 using MediaBrowser.Controller.Providers;
-using MediaBrowser.Controller.Resolvers;
 using MediaBrowser.Model.Channels;
 using MediaBrowser.Model.Dto;
 using MediaBrowser.Model.Entities;
@@ -24,9 +21,10 @@ using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Net;
+using System.Text;
 using System.Threading;
 using System.Threading.Tasks;
-using MediaBrowser.Server.Implementations.Library;
 
 namespace MediaBrowser.Server.Implementations.Channels
 {
@@ -1293,16 +1291,16 @@ namespace MediaBrowser.Server.Implementations.Channels
             }
         }
 
-        private async Task RefreshIfNeeded(BaseItem program, CancellationToken cancellationToken)
+        private readonly Task _cachedTask = Task.FromResult(true);
+        private Task RefreshIfNeeded(BaseItem program, CancellationToken cancellationToken)
         {
-            if (_refreshedItems.ContainsKey(program.Id))
+            if (!_refreshedItems.ContainsKey(program.Id))
             {
-                return;
+                _refreshedItems.TryAdd(program.Id, true);
+                return program.RefreshMetadata(cancellationToken);
             }
 
-            await program.RefreshMetadata(cancellationToken).ConfigureAwait(false);
-
-            _refreshedItems.TryAdd(program.Id, true);
+            return _cachedTask;
         }
 
         internal IChannel GetChannelProvider(Channel channel)
diff --git a/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs b/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs
index ac742f04a0..96498563e6 100644
--- a/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs
+++ b/MediaBrowser.Server.Implementations/LiveTv/LiveTvManager.cs
@@ -309,16 +309,16 @@ namespace MediaBrowser.Server.Implementations.LiveTv
             return Task.FromResult(true);
         }
 
-        private async Task RefreshIfNeeded(LiveTvProgram program, CancellationToken cancellationToken)
+        private readonly Task _cachedTask = Task.FromResult(true);
+        private Task RefreshIfNeeded(LiveTvProgram program, CancellationToken cancellationToken)
         {
-            if (_refreshedPrograms.ContainsKey(program.Id))
+            if (!_refreshedPrograms.ContainsKey(program.Id))
             {
-                return;
+                _refreshedPrograms.TryAdd(program.Id, true);
+                return program.RefreshMetadata(cancellationToken);
             }
 
-            _refreshedPrograms.TryAdd(program.Id, true);
-
-            await program.RefreshMetadata(cancellationToken).ConfigureAwait(false);
+            return _cachedTask;
         }
 
         public async Task<ILiveTvRecording> GetInternalRecording(string id, CancellationToken cancellationToken)
diff --git a/MediaBrowser.Server.Implementations/Localization/JavaScript/javascript.json b/MediaBrowser.Server.Implementations/Localization/JavaScript/javascript.json
index 02fdf9b938..aff6308463 100644
--- a/MediaBrowser.Server.Implementations/Localization/JavaScript/javascript.json
+++ b/MediaBrowser.Server.Implementations/Localization/JavaScript/javascript.json
@@ -294,7 +294,7 @@
     "LabelNewProgram": "NEW",
     "LabelPremiereProgram": "PREMIERE",
     "LabelHDProgram": "HD",
-    "HeaderChangeFolderType": "Change Folder Type",
+    "HeaderChangeFolderType": "Change Content Type",
     "HeaderChangeFolderTypeHelp": "To change the type, please remove and rebuild the folder with the new type.",
     "HeaderAlert": "Alert",
     "MessagePleaseRestart": "Please restart to finish updating.",
@@ -627,7 +627,7 @@
     "MessageInvitationSentToUser": "An email has been sent to {0}, inviting them to accept your sharing invitation.",
     "MessageInvitationSentToNewUser": "An email has been sent to {0} inviting them to sign up with Media Browser.",
     "HeaderConnectionFailure": "Connection Failure",
-    "MessageUnableToConnectToServer": "We're unable to connect to the selected server right now. Please try again later.",
+    "MessageUnableToConnectToServer": "We're unable to connect to the selected server right now. Please ensure it is running and try again.",
     "ButtonSelectServer": "Select server",
     "MessagePluginConfigurationRequiresLocalAccess": "To configure this plugin please sign in to your local server directly.",
     "MessageLoggedOutParentalControl": "Access is currently restricted. Please try again later.",
diff --git a/MediaBrowser.Server.Implementations/Localization/Server/server.json b/MediaBrowser.Server.Implementations/Localization/Server/server.json
index e07c9adb77..2d00f3c767 100644
--- a/MediaBrowser.Server.Implementations/Localization/Server/server.json
+++ b/MediaBrowser.Server.Implementations/Localization/Server/server.json
@@ -241,10 +241,12 @@
     "VisitMediaBrowserWebsite": "Visit the Media Browser Web Site",
     "VisitMediaBrowserWebsiteLong": "Visit the Media Browser Web site to catch the latest news and keep up with the developer blog.",
     "OptionHideUser": "Hide this user from login screens",
+    "OptionHideUserFromLoginHelp": "Useful for private or hidden administrator accounts. The user will need to sign in manually by entering their username and password.",
     "OptionDisableUser": "Disable this user",
     "OptionDisableUserHelp": "If disabled the server will not allow any connections from this user. Existing connections will be abruptly terminated.",
     "HeaderAdvancedControl": "Advanced Control",
     "LabelName": "Name:",
+    "ButtonHelp": "Help",
     "OptionAllowUserToManageServer": "Allow this user to manage the server",
     "HeaderFeatureAccess": "Feature Access",
     "OptionAllowMediaPlayback": "Allow media playback",
diff --git a/MediaBrowser.Server.Startup.Common/ApplicationHost.cs b/MediaBrowser.Server.Startup.Common/ApplicationHost.cs
index 41f0a28060..bbdb89ac39 100644
--- a/MediaBrowser.Server.Startup.Common/ApplicationHost.cs
+++ b/MediaBrowser.Server.Startup.Common/ApplicationHost.cs
@@ -750,7 +750,14 @@ namespace MediaBrowser.Server.Startup.Common
         /// </summary>
         protected override void FindParts()
         {
-            if (IsFirstRun)
+            // TODO: Remove after next release
+            if (!IsFirstRun && !ServerConfigurationManager.Configuration.IsPortAuthorized)
+            {
+                ServerConfigurationManager.Configuration.IsPortAuthorized = true;
+                ConfigurationManager.SaveConfiguration();
+            }
+
+            if (!ServerConfigurationManager.Configuration.IsPortAuthorized)
             {
                 RegisterServerWithAdministratorAccess();
             }
@@ -824,6 +831,9 @@ namespace MediaBrowser.Server.Startup.Common
 
             if (!HttpServer.UrlPrefixes.SequenceEqual(HttpServerUrlPrefixes, StringComparer.OrdinalIgnoreCase))
             {
+                ServerConfigurationManager.Configuration.IsPortAuthorized = false;
+                ServerConfigurationManager.SaveConfiguration();
+
                 NotifyPendingRestart();
             }
         }
diff --git a/MediaBrowser.XbmcMetadata/Savers/AlbumNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/AlbumNfoSaver.cs
index 583255891f..9bd9ac65ed 100644
--- a/MediaBrowser.XbmcMetadata/Savers/AlbumNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/AlbumNfoSaver.cs
@@ -36,7 +36,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
                 return false;
             }
 
-            return item is MusicAlbum && updateType >= ItemUpdateType.ImageUpdate;
+            return item is MusicAlbum && updateType >= MinimumUpdateType;
         }
 
         protected override void WriteCustomElements(IHasMetadata item, XmlWriter writer)
diff --git a/MediaBrowser.XbmcMetadata/Savers/ArtistNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/ArtistNfoSaver.cs
index 1ef0304fe2..c592ec4b7e 100644
--- a/MediaBrowser.XbmcMetadata/Savers/ArtistNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/ArtistNfoSaver.cs
@@ -36,7 +36,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
                 return false;
             }
 
-            return item is MusicArtist && updateType >= ItemUpdateType.ImageUpdate;
+            return item is MusicArtist && updateType >= MinimumUpdateType;
         }
 
         protected override void WriteCustomElements(IHasMetadata item, XmlWriter writer)
diff --git a/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
index 0f1d53ea63..da5126676e 100644
--- a/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/BaseNfoSaver.cs
@@ -119,6 +119,19 @@ namespace MediaBrowser.XbmcMetadata.Savers
         protected IUserDataManager UserDataManager { get; private set; }
         protected ILogger Logger { get; private set; }
 
+        protected ItemUpdateType MinimumUpdateType
+        {
+            get
+            {
+                if (ConfigurationManager.GetNfoConfiguration().SaveImagePathsInNfo)
+                {
+                    return ItemUpdateType.ImageUpdate;
+                }
+
+                return ItemUpdateType.MetadataDownload;
+            }
+        }
+
         public string Name
         {
             get
diff --git a/MediaBrowser.XbmcMetadata/Savers/EpisodeNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/EpisodeNfoSaver.cs
index 090d41015d..6fd396e40f 100644
--- a/MediaBrowser.XbmcMetadata/Savers/EpisodeNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/EpisodeNfoSaver.cs
@@ -35,7 +35,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
                 return false;
             }
 
-            return item is Episode && updateType >= ItemUpdateType.ImageUpdate;
+            return item is Episode && updateType >= MinimumUpdateType;
         }
 
         protected override void WriteCustomElements(IHasMetadata item, XmlWriter writer)
diff --git a/MediaBrowser.XbmcMetadata/Savers/MovieNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/MovieNfoSaver.cs
index bfb2b916ec..d049843f35 100644
--- a/MediaBrowser.XbmcMetadata/Savers/MovieNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/MovieNfoSaver.cs
@@ -55,7 +55,15 @@ namespace MediaBrowser.XbmcMetadata.Savers
             // Check parent for null to avoid running this against things like video backdrops
             if (video != null && !(item is Episode) && !video.IsOwnedItem)
             {
-                return updateType >= ItemUpdateType.ImageUpdate;
+                // If it's a plain video, skip if content type is unset (unless editing)
+                if (video.GetType() == typeof (Video))
+                {
+                    if (updateType < ItemUpdateType.MetadataEdit && string.IsNullOrEmpty(LibraryManager.GetContentType(video)))
+                    {
+                        return false;
+                    }
+                }
+                return updateType >= MinimumUpdateType;
             }
 
             return false;
@@ -95,8 +103,6 @@ namespace MediaBrowser.XbmcMetadata.Savers
             }
         }
 
-        private static readonly CultureInfo UsCulture = new CultureInfo("en-US");
-
         protected override List<string> GetTagsUsed()
         {
             var list = new List<string>
diff --git a/MediaBrowser.XbmcMetadata/Savers/SeasonNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/SeasonNfoSaver.cs
index 99a53fd9e2..49ace77020 100644
--- a/MediaBrowser.XbmcMetadata/Savers/SeasonNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/SeasonNfoSaver.cs
@@ -39,7 +39,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
                 return false;
             }
 
-            return updateType >= ItemUpdateType.ImageUpdate || (updateType >= ItemUpdateType.MetadataImport && File.Exists(GetSavePath(item)));
+            return updateType >= MinimumUpdateType || (updateType >= ItemUpdateType.MetadataImport && File.Exists(GetSavePath(item)));
         }
 
         protected override void WriteCustomElements(IHasMetadata item, XmlWriter writer)
diff --git a/MediaBrowser.XbmcMetadata/Savers/SeriesNfoSaver.cs b/MediaBrowser.XbmcMetadata/Savers/SeriesNfoSaver.cs
index 0498919aee..099e8dbd7f 100644
--- a/MediaBrowser.XbmcMetadata/Savers/SeriesNfoSaver.cs
+++ b/MediaBrowser.XbmcMetadata/Savers/SeriesNfoSaver.cs
@@ -35,7 +35,7 @@ namespace MediaBrowser.XbmcMetadata.Savers
                 return false;
             }
 
-            return item is Series && updateType >= ItemUpdateType.ImageUpdate;
+            return item is Series && updateType >= MinimumUpdateType;
         }
 
         protected override void WriteCustomElements(IHasMetadata item, XmlWriter writer)