Return of Reckoning

"Error: System.IO.InvalidDataException: Block length does not match with its complement.
at System.IO.Compression.Inflater.DecodeUncompressedBlock(Boolean& end_of_block)
at System.IO.Compression.Inflater.Decode()
at System.IO.Compression.Inflater.Inflate(Byte[] bytes, Int32 offset, Int32 length)
at System.IO.Compression.DeflateStream.Read(Byte[] array, Int32 offset, Int32 count)
at WarZoneLib.MYP.MFTEntry.jL75jASl2Yda2LGZjdQ(Object , Object , Int32 , Int32 )
at WarZoneLib.MYP.MFTEntry.ReadData(Stream _stream)
at WarZoneLib.MYP.pHKCytFC1PYCtYpy2O(Object , Object )
at WarZoneLib.MYP.ReadFile(Int64 hash)
at RoRLauncher.Client.HSaO2QxVy6XtcAJqHwq(Object , Int64 hash)
at RoRLauncher.Client.VerifyManifest(CSV csv)
at RoRLauncher.Client.ioU8iX8ExPSOk3xxQMB(Object )
at RoRLauncher.Client.Handle(PacketIn packet)
at RoRLauncher.Client.IkaEZ48iD826NFTu0BH(Object )
at RoRLauncher.Client.OnReceive(PacketIn packet)
at RoRLauncher.Client.rSN1Kf8QdDryQ7nW8sU(Object )
at RoRLauncher.Client.YFLZyjs0vm(Object )"

Occurs at roughly the same time each time. Not sure why. Audio 4/7, file 311/6812. I've managed to make it happen consistently 4 times in a row.