Problem when publishing quizmaker

I'm getting the following error when I try to publish a quiz. "A generic error occurred in GDI+"

Here are the details:

System.Runtime.InteropServices.ExternalException: A generic error occurred in GDI+.

   at System.Drawing.Image.Save(Stream stream, ImageCodecInfo encoder, EncoderParameters encoderParams)

   at System.Drawing.Image.Save(MemoryStream stream)

   at System.Drawing.ImageConverter.ConvertTo(ITypeDescriptorContext context, CultureInfo culture, Object value, Type destinationType)

   at System.ComponentModel.TypeConverter.ConvertTo(Object value, Type destinationType)

   at Articulate.Drawing.Imaging.ImageCompressionSettings.b()

   at Articulate.Drawing.Imaging.ImageCompressionSettings.get_IsLossy()

   at Articulate.Design.Shapes.Picture.Export(IPublishService service, String fileName, ccStageObject stageObj)

   at Articulate.Design.Shape.GetStageObject(IPublishService service, ccSlide slide)

   at Articulate.Design.Shapes.Picture.GetStageObject(IPublishService service, ccSlide slide)

   at Articulate.Design.Publish.Player.PlayerXml.a(Object A_0, a A_1)

   at Articulate.Design.Publish.Player.PlayerXml.b(Object A_0, a A_1)

   at Articulate.Design.Publish.Player.PlayerXml.Save(Int32 state, String folder, StringList publishedFiles)

   at Articulate.Design.Publish.TargetContext.a.i()

   at Articulate.Design.Publish.TargetContext.a.Invoke(PlayerXml A_0)

   at Articulate.Design.Publish.TargetContext.Publish(ActionCollection& actions, Boolean& showSuccess, String& helpTopic, String& successText, String& buttonText, String& folder, String[]& files)

   at Articulate.Windows.Forms.Publish.d(Object A_0, EventArgs A_1)

   at System.Windows.Forms.Control.OnClick(EventArgs e)

   at System.Windows.Forms.Button.OnClick(EventArgs e)

   at Articulate.Windows.Forms.BaseButton.OnClick(EventArgs e)

   at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)

   at Articulate.Windows.Forms.BaseButton.OnMouseUp(MouseEventArgs e)

   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 Articulate.Windows.Forms.BaseButton.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)

There were similar issues with earlier versions when saving and closing, but this error appears when publishing and happens on slide 16 of 30 on two both my laptop and my PC. Both are running W7 64Bit.

Can anyone give me an idea of what is causing it please?