Unexpected error - AccessViolationException

Got a pop up dialog with the following information when closing a RDP session after using embedded RDP sessions extensively:

AccessViolationException - Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

at MSTSCLib.IMsRdpClient6.get_Connected()
at AxMSTSCLib.AxMsRdpClient6.get_Connected()
at Devolutions.RemoteDesktopManager.Frames.Embedded.FreEmbeddedRDP.Disconnecting()
at Devolutions.RemoteDesktopManager.Managers.EmbeddedViewManager.Close(FrmEmbeddedContainer aChildForm)
at Cx.Windows.Forms.MdiTabStripButton.OnDropDownShow(EventArgs e)
at System.Windows.Forms.ToolStripDropDownItem.ShowDropDownInternal()
at System.Windows.Forms.ToolStripDropDownItem.ShowDropDown(Boolean mousePush)
at System.Windows.Forms.ToolStripSplitButton.OnMouseDown(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseDown(MouseEventArgs e)
at System.Windows.Forms.ToolStripItem.FireEventInteractive(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStripItem.FireEvent(EventArgs e, ToolStripItemEventType met)
at System.Windows.Forms.ToolStrip.OnMouseDown(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseDown(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.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)


Let me know if you need further details.

Thanks,
Chris