GDI+ error using TSE

Hello,
When used in a terminal server session, my application sometimes throw an exception.
Here is the stack trace :
[System.Runtime.InteropServices.ExternalException]
A generic error occurred in GDI+.
at System.Drawing.Graphics.Clear(Color color)
at TD.SandDock.DockControl.OnPaintBackground(PaintEventArgs e)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs)
at System.Windows.Forms.Control.WmEraseBkgnd(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ContainerControl.WndProc(Message& m)
at TD.SandDock.DockControl.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)

Any idea about the problem ?
(sanddock 3.0.1 vs 2005)

Thanks for your help.

I can confirm i have had this a few times too I cant track it down yet