Return of Reckoning

So I was introducing my friend to the server, and getting him online. It worked for about 10 minutes, and he crashed suddenly. Since then, this error came up immediately on startup of the launcher:

Error: System.IO.EndOfStreamException: Unable to read beyond the end of the stream.
at System.IO.BinaryReader.FillBuffer(Int32 numBytes)
at System.IO.BinaryReader.ReadUInt32()
at WarZoneLib.MYP.MFTHeader.g4Y0iZjZoPDHBG8M6pK(Object )
at WarZoneLib.MYP.MFTHeader.Load(BinaryReader reader)
at WarZoneLib.MYP.ycSXwlbNRwQKfaSJWu(Object , Object )
at WarZoneLib.MYP..ctor(String fileName, FileAccess access)
at WarZoneLib.MYPManager.Get(MythicPackage archive)
at RoRLauncher.Client.gGUhKmcY0MwYwiWiANN(MythicPackage archive)
at RoRLauncher.Client.Handle(PacketIn packet)
at RoRLauncher.Client.uVm3RMckDq5gW3822Li(Object )
at RoRLauncher.Client.OnReceive(PacketIn packet)
at RoRLauncher.Client.sQFFQNc4xaG4Xv8fcHj(Object )
at RoRLauncher.Client.tkeprHWAcH(Object )

Does anyone know of a fix?

i am also having this issue