Fixed: NzbDrone running on Windows should no longer fail while getting a very long path from a sabnzbd running on linux.

src/NzbDrone.Common.Test/PathExtensionFixture.cs

@@ -136,6 +136,23 @@ namespace NzbDrone.Common.Test
             parentPath.IsParentPath(childPath).Should().Be(expectedResult);
         }
 
+        [TestCase(@"C:\Test\mydir", @"C:\Test")]
+        [TestCase(@"C:\Test\", @"C:")]
+        [TestCase(@"C:\", null)]
+        public void path_should_return_parent(string path, string parentPath)
+        {
+            path.GetParentPath().Should().Be(parentPath);
+        }
+
+        [Test]
+        public void path_should_return_parent_for_oversized_path()
+        {
+            var path       = @"/media/2e168617-f2ae-43fb-b88c-3663af1c8eea/downloads/sabnzbd/nzbdrone/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories";
+            var parentPath = @"/media/2e168617-f2ae-43fb-b88c-3663af1c8eea/downloads/sabnzbd/nzbdrone/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing/With.Alot.Of.Nested.Directories/Some.Real.Big.Thing";
+
+            path.GetParentPath().Should().Be(parentPath);
+        }
+
         [Test]
         [Ignore]
         public void should_not_be_parent_when_it_is_grandparent()

src/NzbDrone.Common/PathExtensions.cs

@@ -53,6 +53,22 @@ namespace NzbDrone.Common
             return childPath.Substring(parentPath.Length).Trim(Path.DirectorySeparatorChar);
         }
 
+        public static string GetParentPath(this string childPath)
+        {
+            var parentPath = childPath.TrimEnd('\\', '/');
+
+            var index = parentPath.LastIndexOfAny(new[] { '\\', '/' });
+
+            if (index != -1)
+            {
+                return parentPath.Substring(0, index);
+            }
+            else
+            {
+                return null;
+            }
+        }
+
         public static bool IsParentPath(this string parentPath, string childPath)
         {
             parentPath = parentPath.TrimEnd(Path.DirectorySeparatorChar);

src/NzbDrone.Core/Download/Clients/Sabnzbd/Sabnzbd.cs

@@ -161,10 +161,10 @@ namespace NzbDrone.Core.Download.Clients.Sabnzbd
 
                 if (!sabHistoryItem.Storage.IsNullOrWhiteSpace())
                 {
-                    var parent = Directory.GetParent(sabHistoryItem.Storage);
-                    if (parent != null && parent.Name == sabHistoryItem.Title)
+                    var parent = sabHistoryItem.Storage.GetParentPath();
+                    if (parent != null && Path.GetFileName(parent) == sabHistoryItem.Title)
                     {
-                        historyItem.OutputPath = parent.FullName;
+                        historyItem.OutputPath = parent;
                     }
                     else
                     {