Hi,

When I save an image I receive the following error message:

System.ArgumentNullException: Value cannot be null.
Parameter name: httpContext

Stacktrace:

at System.Web.HttpContextWrapper..ctor(HttpContext httpContext)
at Umbraco.Web.SingletonHttpContextAccessor.get_Value()
   at Umbraco.Web.RequestLifespanMessagesFactory.Get()
   at Umbraco.Core.Services.MediaService.Umbraco.Core.Services.IMediaServiceOperations.Save(IMedia media, Int32 userId, Boolean raiseEvents)
   at Umbraco.Core.Services.MediaService.Save(IMedia media, Int32 userId, Boolean raiseEvents)
   at Tinifier.Core.Repository.Image.TImageRepository.Update(Int32 id, Int32 actualSize)
   at Tinifier.Core.Services.Media.ImageService.UpdateImageAfterSuccessfullRequest(TinyResponse tinyResponse, TImage image, IFileSystem fs)
   at Tinifier.Core.Services.Media.ImageService.<OptimizeImageAsync>d__13.MoveNext()

I'm using the latest version of TInifier and Umbraco v. 7.5.9.