diff --git a/MediaBrowser.Model/DTO/UserDto.cs b/MediaBrowser.Model/DTO/UserDto.cs
index ca173a0e8..a67c1b1a0 100644
--- a/MediaBrowser.Model/DTO/UserDto.cs
+++ b/MediaBrowser.Model/DTO/UserDto.cs
@@ -57,7 +57,7 @@ namespace MediaBrowser.Model.Dto
         /// </summary>
         /// <value>The primary image aspect ratio.</value>
         public double? PrimaryImageAspectRatio { get; set; }
-        
+
         /// <summary>
         /// Gets a value indicating whether this instance has primary image.
         /// </summary>
@@ -68,6 +68,17 @@ namespace MediaBrowser.Model.Dto
             get { return PrimaryImageTag.HasValue; }
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="UserDto"/> class.
+        /// </summary>
+        public UserDto()
+        {
+            Configuration = new UserConfiguration();
+        }
+
+        /// <summary>
+        /// Occurs when [property changed].
+        /// </summary>
         public event PropertyChangedEventHandler PropertyChanged;
     }
 }
diff --git a/MediaBrowser.Model/Dto/IItemDto.cs b/MediaBrowser.Model/Dto/IItemDto.cs
index c97029655..3e7d1c608 100644
--- a/MediaBrowser.Model/Dto/IItemDto.cs
+++ b/MediaBrowser.Model/Dto/IItemDto.cs
@@ -1,8 +1,15 @@
 
 namespace MediaBrowser.Model.Dto
 {
+    /// <summary>
+    /// Interface IItemDto
+    /// </summary>
     public interface IItemDto
     {
+        /// <summary>
+        /// Gets or sets the primary image aspect ratio.
+        /// </summary>
+        /// <value>The primary image aspect ratio.</value>
         double? PrimaryImageAspectRatio { get; set; }
     }
 }
diff --git a/MediaBrowser.Model/Entities/LibraryUpdateInfo.cs b/MediaBrowser.Model/Entities/LibraryUpdateInfo.cs
index e98b7ae2c..ae85cbc3e 100644
--- a/MediaBrowser.Model/Entities/LibraryUpdateInfo.cs
+++ b/MediaBrowser.Model/Entities/LibraryUpdateInfo.cs
@@ -32,6 +32,9 @@ namespace MediaBrowser.Model.Entities
         /// <value>The items updated.</value>
         public List<Guid> ItemsUpdated { get; set; }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="LibraryUpdateInfo"/> class.
+        /// </summary>
         public LibraryUpdateInfo()
         {
             Folders = new List<Guid>();
diff --git a/MediaBrowser.Model/Entities/VideoFormat.cs b/MediaBrowser.Model/Entities/VideoFormat.cs
index 107d20c14..ad04203e2 100644
--- a/MediaBrowser.Model/Entities/VideoFormat.cs
+++ b/MediaBrowser.Model/Entities/VideoFormat.cs
@@ -1,9 +1,21 @@
 namespace MediaBrowser.Model.Entities
 {
+    /// <summary>
+    /// Enum VideoFormat
+    /// </summary>
     public enum VideoFormat
     {
+        /// <summary>
+        /// The standard
+        /// </summary>
         Standard,
+        /// <summary>
+        /// The digital3 D
+        /// </summary>
         Digital3D,
+        /// <summary>
+        /// The SBS3 D
+        /// </summary>
         Sbs3D
     }
 }
diff --git a/MediaBrowser.Model/Entities/VirtualFolderInfo.cs b/MediaBrowser.Model/Entities/VirtualFolderInfo.cs
index be584e40e..c322b7958 100644
--- a/MediaBrowser.Model/Entities/VirtualFolderInfo.cs
+++ b/MediaBrowser.Model/Entities/VirtualFolderInfo.cs
@@ -18,5 +18,13 @@ namespace MediaBrowser.Model.Entities
         /// </summary>
         /// <value>The locations.</value>
         public List<string> Locations { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="VirtualFolderInfo"/> class.
+        /// </summary>
+        public VirtualFolderInfo()
+        {
+            Locations = new List<string>();
+        }
     }
 }
diff --git a/MediaBrowser.Model/Querying/ItemQuery.cs b/MediaBrowser.Model/Querying/ItemQuery.cs
index 7b2a4903e..80ec350a7 100644
--- a/MediaBrowser.Model/Querying/ItemQuery.cs
+++ b/MediaBrowser.Model/Querying/ItemQuery.cs
@@ -73,7 +73,7 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         /// <value>The video types.</value>
         public VideoType[] VideoTypes { get; set; }
-        
+
         /// <summary>
         /// Whether or not to perform the query recursively
         /// </summary>
@@ -103,7 +103,7 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         /// <value>The include item types.</value>
         public string[] IncludeItemTypes { get; set; }
-        
+
         /// <summary>
         /// Limit results to items containing specific years
         /// </summary>
@@ -127,7 +127,7 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         /// <value>The index by.</value>
         public string SearchTerm { get; set; }
-        
+
         /// <summary>
         /// The dynamic, localized index function name
         /// </summary>
@@ -151,7 +151,7 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         /// <value>The series status.</value>
         public SeriesStatus[] SeriesStatuses { get; set; }
-        
+
         /// <summary>
         /// Gets or sets the ids, which are specific items to retrieve
         /// </summary>
@@ -169,5 +169,35 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         /// <value>The max official rating.</value>
         public string MaxOfficialRating { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ItemQuery"/> class.
+        /// </summary>
+        public ItemQuery()
+        {
+            SortBy = new string[] {};
+
+            Filters = new ItemFilter[] {};
+
+            Fields = new ItemFields[] {};
+
+            MediaTypes = new string[] {};
+
+            VideoFormats = new VideoFormat[] { };
+
+            VideoTypes = new VideoType[] {};
+
+            Genres = new string[] { };
+            Studios = new string[] { };
+            IncludeItemTypes = new string[] { };
+            ExcludeItemTypes = new string[] { };
+            Years = new int[] { };
+            PersonTypes = new string[] { };
+            Ids = new string[] { };
+
+            ImageTypes = new ImageType[] { };
+            AirDays = new DayOfWeek[] { };
+            SeriesStatuses = new SeriesStatus[] { };
+        }
     }
 }
diff --git a/MediaBrowser.Model/Querying/ItemsByNameQuery.cs b/MediaBrowser.Model/Querying/ItemsByNameQuery.cs
index eae2dc042..4569e32c0 100644
--- a/MediaBrowser.Model/Querying/ItemsByNameQuery.cs
+++ b/MediaBrowser.Model/Querying/ItemsByNameQuery.cs
@@ -23,7 +23,7 @@ namespace MediaBrowser.Model.Querying
         /// <value>The size of the page.</value>
         public int? Limit { get; set; }
         /// <summary>
-        /// Gets or sets a value indicating whether this <see cref="ItemsByNameQuery"/> is recursive.
+        /// Gets or sets a value indicating whether this <see cref="ItemsByNameQuery" /> is recursive.
         /// </summary>
         /// <value><c>true</c> if recursive; otherwise, <c>false</c>.</value>
         public bool Recursive { get; set; }
@@ -47,5 +47,15 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         /// <value>The person types.</value>
         public string[] PersonTypes { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ItemsByNameQuery"/> class.
+        /// </summary>
+        public ItemsByNameQuery()
+        {
+            Fields = new ItemFields[] {};
+
+            PersonTypes = new string[] {};
+        }
     }
 }
diff --git a/MediaBrowser.Model/Querying/ItemsResult.cs b/MediaBrowser.Model/Querying/ItemsResult.cs
index fe723f553..b3f771e4b 100644
--- a/MediaBrowser.Model/Querying/ItemsResult.cs
+++ b/MediaBrowser.Model/Querying/ItemsResult.cs
@@ -18,5 +18,13 @@ namespace MediaBrowser.Model.Querying
         /// </summary>
         /// <value>The total record count.</value>
         public int TotalRecordCount { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ItemsResult"/> class.
+        /// </summary>
+        public ItemsResult()
+        {
+            Items = new BaseItemDto[] { };
+        }
     }
 }
diff --git a/MediaBrowser.Model/System/SystemInfo.cs b/MediaBrowser.Model/System/SystemInfo.cs
index 6e2f26775..7173425d1 100644
--- a/MediaBrowser.Model/System/SystemInfo.cs
+++ b/MediaBrowser.Model/System/SystemInfo.cs
@@ -60,5 +60,17 @@ namespace MediaBrowser.Model.System
         /// </summary>
         /// <value>The id.</value>
         public string Id { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="SystemInfo"/> class.
+        /// </summary>
+        public SystemInfo()
+        {
+            InProgressInstallations = new InstallationInfo[] { };
+
+            CompletedInstallations = new InstallationInfo[] { };
+
+            FailedPluginAssemblies = new string[] { };
+        }
     }
 }
diff --git a/MediaBrowser.Model/Tasks/TaskInfo.cs b/MediaBrowser.Model/Tasks/TaskInfo.cs
index 81c8372bd..58d9cac15 100644
--- a/MediaBrowser.Model/Tasks/TaskInfo.cs
+++ b/MediaBrowser.Model/Tasks/TaskInfo.cs
@@ -54,5 +54,13 @@ namespace MediaBrowser.Model.Tasks
         /// </summary>
         /// <value>The category.</value>
         public string Category { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TaskInfo"/> class.
+        /// </summary>
+        public TaskInfo()
+        {
+            Triggers = new TaskTriggerInfo[] {};
+        }
     }
 }
diff --git a/MediaBrowser.Model/Updates/PackageInfo.cs b/MediaBrowser.Model/Updates/PackageInfo.cs
index 3313f39cf..c13d59adb 100644
--- a/MediaBrowser.Model/Updates/PackageInfo.cs
+++ b/MediaBrowser.Model/Updates/PackageInfo.cs
@@ -121,5 +121,13 @@ namespace MediaBrowser.Model.Updates
         /// </summary>
         /// <value>The versions.</value>
         public List<PackageVersionInfo> versions { get; set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="PackageInfo"/> class.
+        /// </summary>
+        public PackageInfo()
+        {
+            versions = new List<PackageVersionInfo>();
+        }
     }
 }