dosbox -- no longer shows images, just a big white box with a red x

[Former user]

• launchbox 6.2
• windows 10
• once in a while
• seems intermittent System.InvalidOperationException: Object is currently in use elsewhere. at System.Drawing.Graphics.CheckErrorStatus(Int32 status) at System.Drawing.Graphics.FillRectangle(Brush brush, Int32 x, Int32 y, Int32 width, Int32 height) at System.Drawing.Graphics.FillRectangle(Brush brush, Rectangle rect) at (GameGui , Graphics , Int32 , Boolean ) at LaunchBox.Drawing.GameGui.Paint(Graphics g, Int32 yOffset, Boolean controlFocused) at (ImageGamesControl , PaintEventArgs ) at LaunchBox.Controls.ImageGamesControl.OnPaint(PaintEventArgs e) at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer) at System.Windows.Forms.Control.WmPaint(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)