Tweaked error message when TransferFile destination already exists.

src/NzbDrone.Common/Disk/DiskTransferService.cs

@@ -223,7 +223,7 @@ namespace NzbDrone.Common.Disk
                     _diskProvider.MoveFile(sourcePath, tempPath, true);
                     try
                     {
-                        ClearTargetPath(targetPath, overwrite);
+                        ClearTargetPath(sourcePath, targetPath, overwrite);
 
                         _diskProvider.MoveFile(tempPath, targetPath);
 
@@ -253,7 +253,7 @@ namespace NzbDrone.Common.Disk
                 throw new IOException(string.Format("Destination cannot be a child of the source [{0}] => [{1}]", sourcePath, targetPath));
             }
 
-            ClearTargetPath(targetPath, overwrite);
+            ClearTargetPath(sourcePath, targetPath, overwrite);
 
             if (mode.HasFlag(TransferMode.HardLink))
             {
@@ -330,7 +330,7 @@ namespace NzbDrone.Common.Disk
             return TransferMode.None;
         }
 
-        private void ClearTargetPath(string targetPath, bool overwrite)
+        private void ClearTargetPath(string sourcePath, string targetPath, bool overwrite)
         {
             if (_diskProvider.FileExists(targetPath))
             {
@@ -340,7 +340,7 @@ namespace NzbDrone.Common.Disk
                 }
                 else
                 {
-                    throw new IOException(string.Format("Destination already exists [{0}]", targetPath));
+                    throw new IOException(string.Format("Destination already exists. [{0}] to [{1}]", sourcePath, targetPath));
                 }
             }
         }