Unhandled Exception in RenderForm.GetBackground()

[DavidRawling]

Running from a scheduled task. Exception "Parameter is not valid" .

Loading with command "WPInfo /LoadFile=User.wpi /Silent". References the User folder (relative) containing a single image.

************** Exception Text **************
System.ArgumentException: Parameter is not valid.
at System.Drawing.Bitmap..ctor(Int32 width, Int32 height, PixelFormat format)
at Ventajou.WPInfo.RenderForm.GetBackground()
at Ventajou.WPInfo.RenderForm.FormLoaded(Object sender, EventArgs e)
at System.Windows.Forms.Form.OnLoad(EventArgs e)
at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
at System.Windows.Forms.Control.CreateControl()
at System.Windows.Forms.Control.WmShowWindow(Message& m)
at System.Windows.Forms.Control.WndProc(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)

[DavidRawling]

Does not seem to happen if the resolution is specified on the command line (but even then it did not correctly process - the resulting image is not the resolution specified)