add error handling to package retrieval

MediaBrowser.Common.Implementations/Updates/InstallationManager.cs

@@ -194,7 +194,9 @@ namespace MediaBrowser.Common.Implementations.Updates
         /// <returns>Task{List{PackageInfo}}.</returns>
         public async Task<IEnumerable<PackageInfo>> GetAvailablePackagesWithoutRegistrationInfo(CancellationToken cancellationToken)
         {
-            using (var stream = await GetCachedPackages(cancellationToken).ConfigureAwait(false))
+            try
+            {
+                using (var stream = _fileSystem.OpenRead(PackageCachePath))
                 {
                     var packages = _jsonSerializer.DeserializeFromStream<List<PackageInfo>>(stream).ToList();
 
@@ -206,25 +208,22 @@ namespace MediaBrowser.Common.Implementations.Updates
                     return packages;
                 }
             }
-
-        private string PackageCachePath
+            catch (Exception)
             {
-            get { return Path.Combine(_appPaths.CachePath, "serverpackages.json"); }
+
             }
 
-        private async Task<Stream> GetCachedPackages(CancellationToken cancellationToken)
-        {
-            try
+            _lastPackageUpdateTime = DateTime.MinValue;
+            await UpdateCachedPackages(cancellationToken, true).ConfigureAwait(false);
+            using (var stream = _fileSystem.OpenRead(PackageCachePath))
             {
-                return _fileSystem.OpenRead(PackageCachePath);
+                return _jsonSerializer.DeserializeFromStream<List<PackageInfo>>(stream).ToList();
             }
-            catch (Exception)
-            {
-
         }
 
-            await UpdateCachedPackages(cancellationToken, true).ConfigureAwait(false);
-            return _fileSystem.OpenRead(PackageCachePath);
+        private string PackageCachePath
+        {
+            get { return Path.Combine(_appPaths.CachePath, "serverpackages.json"); }
         }
 
         private readonly SemaphoreSlim _updateSemaphore = new SemaphoreSlim(1, 1);