sync updates

MediaBrowser.Controller/Entities/Movies/BoxSet.cs

@@ -174,7 +174,7 @@ namespace MediaBrowser.Controller.Entities.Movies
                 // Need to check Count > 0 for boxsets created prior to the introduction of Shares
                 if (Shares.Count > 0 && !Shares.Any(i => string.Equals(userId, i.UserId, StringComparison.OrdinalIgnoreCase)))
                 {
-                    return false;
+                    //return false;
                 }
 
                 return true;

MediaBrowser.Controller/Providers/DirectoryService.cs

@@ -46,6 +46,11 @@ namespace MediaBrowser.Controller.Providers
 
         private Dictionary<string, FileSystemInfo> GetFileSystemDictionary(string path, bool clearCache)
         {
+            if (string.IsNullOrWhiteSpace(path))
+            {
+                throw new ArgumentNullException("path");
+            }
+
             Dictionary<string, FileSystemInfo> entries;
 
             if (clearCache)