when trying to upload a GIF in V2.1 for a product image, get the following error
System.ArgumentException: Parameter is not valid. at System.Drawing.Bitmap..ctor(Stream stream) at Nop.Services.Media.PictureService.ValidatePicture(Byte[] pictureBinary, String mimeType) at Nop.Services.Media.PictureService.InsertPicture(Byte[] pictureBinary, String mimeType, Boolean isNew) at Nop.Admin.Controllers.PictureController.InsertPicture(String authToken, HttpPostedFileBase httpPostedFile) at Nop.Admin.Controllers.PictureController.AsyncUpload(String authToken) at lambda_method(Closure , ControllerBase , Object[] ) at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) at System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName)