Fixed: Release group will not contain file extension

src/NzbDrone.Core/Parser/Parser.cs

@@ -129,8 +129,11 @@ namespace NzbDrone.Core.Parser
             if (result == null)
             {
                 Logger.Warn("Unable to parse episode info from path {0}", path);
+                return null;
             }
 
+            result.ReleaseGroup = ParseReleaseGroup(fileInfo.Name.Replace(fileInfo.Extension, ""));
+
             return result;
         }