I maintain 2 systems on different platforms.
Only difference between the 2 installs is the version of Mono.
System A: Mono 5.0.1.1 (No problems importing files)
System B: Mono 4.6.2.7 (Occasional “Unable to determine if file is a sample”)
From System B:
Message
Unable to parse media info from file: /volume1/Downloads/TV-Shows/Lucifer.S03E07.WEB.x264-TBS.mkv: Access to the path “/volume1/Downloads/TV-Shows/Lucifer.S03E07.WEB.x264-TBS.mkv” is denied.
Exception
System.UnauthorizedAccessException: Access to the path “/volume1/Downloads/TV-Shows/Lucifer.S03E07.WEB.x264-TBS.mkv” is denied.
at System.IO.FileStream…ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean anonymous, System.IO.FileOptions options) [0x00335] in /spksrc/native/mono/work-native/mono-4.6.2/mcs/class/corlib/System.IO/FileStream.cs:290
at System.IO.FileStream…ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access, System.IO.FileShare share, System.Int32 bufferSize, System.Boolean isAsync, System.Boolean anonymous) [0x00000] in /spksrc/native/mono/work-native/mono-4.6.2/mcs/class/corlib/System.IO/FileStream.cs:157
at System.IO.FileStream…ctor (System.String path, System.IO.FileMode mode, System.IO.FileAccess access) [0x00000] in /spksrc/native/mono/work-native/mono-4.6.2/mcs/class/corlib/System.IO/FileStream.cs:92
at (wrapper remoting-invoke-with-check) System.IO.FileStream:.ctor (string,System.IO.FileMode,System.IO.FileAccess)
at NzbDrone.Common.Disk.DiskProviderBase.OpenReadStream (System.String path) [0x0001b] in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Common\Disk\DiskProviderBase.cs:395
at NzbDrone.Core.MediaFiles.MediaInfo.VideoFileInfoReader.GetMediaInfo (System.String filename) [0x0006e] in M:\BuildAgent\work\b69c1fe19bfc2c38\src\NzbDrone.Core\MediaFiles\MediaInfo\VideoFileInfoReader.cs:55