Unable to Edit Existing Artwork

[pjsteel88]

MusicBee v3.3.7491.38139D  (Win10.0), 21 Nov 2020 20:31:

System.Runtime.InteropServices.ExternalException (0x80004005): A generic error occurred in GDI+.
   at System.Drawing.Image.Save(String filename, ImageCodecInfo encoder, EncoderParameters encoderParams)
   at System.Drawing.Image.Save(String filename, ImageFormat format)
   at #=zxtWTmr_fRzcy5Xjdj9Q_8qKPoGRP.#=zfmKl5CFaqjWm(#=zbdn8Y9h66P3cw_yWKhGnAIs= #=z3gtO5A8=, #=z88wOfaCGeaMTPyIqug== #=z07bmKgg=)
   at #=z0uzQ_FXn6hIlGjp7iSYfjrdD5RXYS$NGdw==.#=zb9kaaZWDNuJF(Object #=z9O_irZI=, EventArgs #=zPDFE8Uo=)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at #=zZMZ4gJLY$uUQMPySc5sEkQ8=.OnClick(EventArgs #=zPDFE8Uo=)
   at #=zZMZ4gJLY$uUQMPySc5sEkQ8=.#=zZjB$p0RBqaIE(Object #=z9O_irZI=, EventArgs #=zPDFE8Uo=)
   at System.Windows.Forms.Control.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnClick(EventArgs e)
   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ButtonBase.WndProc(Message& m)
   at System.Windows.Forms.Button.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

[phred]

You can't edit artwork directly in MB. So please tell us exactly what you were doing and how you were doing it so we can try to reproduce the issue.

EDIT: Perhaps I misunderstood what you wrote. Might you perhaps mean you can -add- artwork?