added error handling to image tag generation

MediaBrowser.Controller/Dto/DtoBuilder.cs

@@ -292,7 +292,12 @@ namespace MediaBrowser.Controller.Dto
             {
                 var type = image.Key;
 
-                dto.ImageTags[type] = Kernel.Instance.ImageManager.GetImageCacheTag(item, type, image.Value);
+                var tag = GetImageCacheTag(item, type, image.Value);
+
+                if (tag.HasValue)
+                {
+                    dto.ImageTags[type] = tag.Value;
+                }
             }
 
             dto.Id = GetClientItemId(item);
@@ -365,7 +370,7 @@ namespace MediaBrowser.Controller.Dto
                 {
                     dto.ParentLogoItemId = GetClientItemId(parentWithLogo);
 
-                    dto.ParentLogoImageTag = Kernel.Instance.ImageManager.GetImageCacheTag(parentWithLogo, ImageType.Logo, parentWithLogo.GetImage(ImageType.Logo));
+                    dto.ParentLogoImageTag = GetImageCacheTag(parentWithLogo, ImageType.Logo, parentWithLogo.GetImage(ImageType.Logo));
                 }
             }
 
@@ -393,7 +398,7 @@ namespace MediaBrowser.Controller.Dto
             {
                 dto.CustomRating = item.CustomRating;
             }
-            
+
             if (fields.Contains(ItemFields.Taglines))
             {
                 dto.Taglines = item.Taglines;
@@ -656,7 +661,7 @@ namespace MediaBrowser.Controller.Dto
 
                     if (!string.IsNullOrEmpty(primaryImagePath))
                     {
-                        baseItemPerson.PrimaryImageTag = Kernel.Instance.ImageManager.GetImageCacheTag(entity, ImageType.Primary, primaryImagePath);
+                        baseItemPerson.PrimaryImageTag = GetImageCacheTag(entity, ImageType.Primary, primaryImagePath);
                     }
                 }
 
@@ -712,7 +717,7 @@ namespace MediaBrowser.Controller.Dto
 
                     if (!string.IsNullOrEmpty(primaryImagePath))
                     {
-                        studioDto.PrimaryImageTag = Kernel.Instance.ImageManager.GetImageCacheTag(entity, ImageType.Primary, primaryImagePath);
+                        studioDto.PrimaryImageTag = GetImageCacheTag(entity, ImageType.Primary, primaryImagePath);
                     }
                 }
 
@@ -805,7 +810,7 @@ namespace MediaBrowser.Controller.Dto
 
             if (!string.IsNullOrEmpty(chapterInfo.ImagePath))
             {
-                dto.ImageTag = Kernel.Instance.ImageManager.GetImageCacheTag(item, ImageType.Chapter, chapterInfo.ImagePath);
+                dto.ImageTag = GetImageCacheTag(item, ImageType.Chapter, chapterInfo.ImagePath);
             }
 
             return dto;
@@ -838,7 +843,13 @@ namespace MediaBrowser.Controller.Dto
 
             if (!string.IsNullOrEmpty(imagePath))
             {
-                info.PrimaryImageTag = Kernel.Instance.ImageManager.GetImageCacheTag(item, ImageType.Primary, imagePath);
+                try
+                {
+                    info.PrimaryImageTag = Kernel.Instance.ImageManager.GetImageCacheTag(item, ImageType.Primary, imagePath);
+                }
+                catch (IOException)
+                {
+                }
             }
 
             return info;
@@ -980,12 +991,11 @@ namespace MediaBrowser.Controller.Dto
         /// <returns>List{System.String}.</returns>
         private List<Guid> GetBackdropImageTags(BaseItem item)
         {
-            if (item.BackdropImagePaths == null)
-            {
-                return new List<Guid>();
-            }
-
-            return item.BackdropImagePaths.Select(p => Kernel.Instance.ImageManager.GetImageCacheTag(item, ImageType.Backdrop, p)).ToList();
+            return item.BackdropImagePaths
+                .Select(p => GetImageCacheTag(item, ImageType.Backdrop, p))
+                .Where(i => i.HasValue)
+                .Select(i => i.Value)
+                .ToList();
         }
 
         /// <summary>
@@ -995,12 +1005,24 @@ namespace MediaBrowser.Controller.Dto
         /// <returns>List{Guid}.</returns>
         private List<Guid> GetScreenshotImageTags(BaseItem item)
         {
-            if (item.ScreenshotImagePaths == null)
+            return item.ScreenshotImagePaths
+                .Select(p => GetImageCacheTag(item, ImageType.Screenshot, p))
+                .Where(i => i.HasValue)
+                .Select(i => i.Value)
+                .ToList();
+        }
+
+        private Guid? GetImageCacheTag(BaseItem item, ImageType type, string path)
+        {
+            try
             {
-                return new List<Guid>();
+                return Kernel.Instance.ImageManager.GetImageCacheTag(item, ImageType.Screenshot, path);
+            }
+            catch (IOException ex)
+            {
+                _logger.ErrorException("Error getting {0} image info for {1}", ex, type, path);
+                return null;
             }
-
-            return item.ScreenshotImagePaths.Select(p => Kernel.Instance.ImageManager.GetImageCacheTag(item, ImageType.Screenshot, p)).ToList();
         }
     }
 }

MediaBrowser.Controller/Entities/BaseItem.cs

@@ -588,7 +588,7 @@ namespace MediaBrowser.Controller.Entities
         /// Gets or sets the community rating vote count.
         /// </summary>
         /// <value>The community rating vote count.</value>
-        public int VoteCount { get; set; }
+        public int? VoteCount { get; set; }
 
         /// <summary>
         /// Gets or sets the run time ticks.

MediaBrowser.Controller/Entities/Folder.cs

@@ -91,7 +91,7 @@ namespace MediaBrowser.Controller.Entities
 
         public List<LinkedChild> LinkedChildren { get; set; }
 
-        protected virtual bool SupportsLinkedChildren
+        protected virtual bool SupportsShortcutChildren
         {
             get { return false; }
         }
@@ -856,6 +856,7 @@ namespace MediaBrowser.Controller.Entities
         {
             var parent = System.IO.Path.GetDirectoryName(path);
 
+            // Depending on whether the path is local or unc, it may return either null or '\' at the top
             while (!string.IsNullOrEmpty(parent) && !parent.ToCharArray()[0].Equals(System.IO.Path.DirectorySeparatorChar))
             {
                 if (Directory.Exists(parent))
@@ -999,15 +1000,32 @@ namespace MediaBrowser.Controller.Entities
         public IEnumerable<BaseItem> GetLinkedChildren()
         {
             return LinkedChildren
-                .Select(i => LibraryManager.RootFolder.FindByPath(i.Path))
+                .Select(GetLinkedChild)
                 .Where(i => i != null);
         }
 
+        /// <summary>
+        /// Gets the linked child.
+        /// </summary>
+        /// <param name="info">The info.</param>
+        /// <returns>BaseItem.</returns>
+        private BaseItem GetLinkedChild(LinkedChild info)
+        {
+            var item = LibraryManager.RootFolder.FindByPath(info.Path);
+
+            if (item == null)
+            {
+                Logger.Warn("Unable to find linked item at {0}", info.Path);
+            }
+
+            return item;
+        }
+
         public override async Task<bool> RefreshMetadata(CancellationToken cancellationToken, bool forceSave = false, bool forceRefresh = false, bool allowSlowProviders = true, bool resetResolveArgs = true)
         {
             var changed = await base.RefreshMetadata(cancellationToken, forceSave, forceRefresh, allowSlowProviders, resetResolveArgs).ConfigureAwait(false);
 
-            return changed || (SupportsLinkedChildren && LocationType == LocationType.FileSystem && RefreshLinkedChildren());
+            return changed || (SupportsShortcutChildren && LocationType == LocationType.FileSystem && RefreshLinkedChildren());
         }
 
         /// <summary>
@@ -1059,6 +1077,7 @@ namespace MediaBrowser.Controller.Entities
 
             if (!newShortcutLinks.SequenceEqual(currentShortcutLinks))
             {
+                Logger.Info("Shortcut links have changed for {0}", Path);
                 newShortcutLinks.AddRange(currentManualLinks);
                 LinkedChildren = newShortcutLinks;
                 return true;

MediaBrowser.Controller/Entities/Movies/BoxSet.cs

@@ -6,7 +6,7 @@ namespace MediaBrowser.Controller.Entities.Movies
     /// </summary>
     public class BoxSet : Folder
     {
-        protected override bool SupportsLinkedChildren
+        protected override bool SupportsShortcutChildren
         {
             get
             {

MediaBrowser.Providers/Movies/MovieDbProvider.cs

@@ -314,7 +314,7 @@ namespace MediaBrowser.Providers.Movies
             if (boxset != null)
             {
                // See if any movies have a collection id already
-                return boxset.Children.OfType<Video>()
+                return boxset.Children.Concat(boxset.GetLinkedChildren()).OfType<Video>()
                     .Select(i => i.GetProviderId(MetadataProviders.TmdbCollection))
                    .FirstOrDefault(i => i != null);
             }
@@ -744,7 +744,7 @@ namespace MediaBrowser.Providers.Movies
                     var boxset = movie as BoxSet;
                     Logger.Info("MovieDbProvider - Using rating of first child of boxset...");
 
-                    var firstChild = boxset.Children.FirstOrDefault();
+                    var firstChild = boxset.Children.Concat(boxset.GetLinkedChildren()).FirstOrDefault();
 
                     boxset.OfficialRating = firstChild != null ? firstChild.OfficialRating : null;
                 }