Unknown Thread Error: mscorlib

[Avisigoth]

Hangs when trying to update.

Rebooted several times, no joy.

Error message follows:

1.1.1 Unknown Thread Error: mscorlib
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.ReadCore(Byte[] buffer, Int32 offset, Int32 count)
at System.IO.FileStream.Read(Byte[] array, Int32 offset, Int32 count)
at System.Security.Cryptography.HashAlgorithm.ComputeHash(Stream inputStream)
at EQ2MAPUpdater.MainWindow.GetFileMD5(String strFilePath)
at EQ2MAPUpdater.MainWindow.DownloadUpdates()
at EQ2MAPUpdater.MainWindow.GetUpdates()
at EQ2MAPUpdater.MainWindow.Timer3_Tick(Object sender, EventArgs e)
at System.Windows.Forms.Timer.OnTick(EventArgs e)
at System.Windows.Forms.Timer.TimerNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)The request could not be performed because of an I/O device error.