Unhandled exception while extracting sound files

[Faderouiche]

i've been using ThomasJepp and i've encounterd no problems with it while extracting sound files except with a single file name "interface_media.bnk_pc" located in "sounds_common.vpp_pc" every time it extracts the first 8 files then i get this error :

Unhandled Exception: System.ArgumentNullException: Value cannot be null.
Parameter name: path1
at System.IO.Path.Combine(String path1, String path2)
at ThomasJepp.SaintsRow.GameInstances.SRIVInstance.OpenLooseFile(String name)
at ThomasJepp.SaintsRow.Localization.LanguageUtility.GetDecodeCharMap(IGameInstance instance, Language language)
at ThomasJepp.SaintsRow.Soundbanks.Streaming.AudioMetadata..ctor(Stream stream, IGameInstance instance)
at ThomasJepp.SaintsRow.ExtractStreamingSoundbank.Program.Main(String[] args)

any ideas why is this happening?