Hi,

I've picked up a solution on behalf of a charity and they've got an issue I just can't seem to get my head around.

They have a web API controller that has a decoration to use an actionFilter (it just sets a "cart" cookie on most calls).

public class CartWebApiFilterAttribute : ActionFilterAttribute {
        public override void OnActionExecuted(HttpActionExecutedContext actionExecutedContext) {
            base.OnActionExecuted(actionExecutedContext);

            var cookies = new List<CookieHeaderValue> {
                new CookieHeaderValue(Constants.Cookies.CartId, Req.Cart.Id.ToString()) {
                    Expires = DateTimeOffset.UtcNow.AddDays(90),
                    HttpOnly = false,
                    Secure = Workspace.IsLive(),
                    Path = "/"
                }
            };

            actionExecutedContext.Response.Headers.AddCookies(cookies);
        }
    }

We're trying to deploy some updates and take Umbraco from V7.11.1 -> v7.12.4. The server is hosted on Azure - the site starts up great but any calls to the API with this decoration throw this error. I think it's some kind of DLL mismatch but I've tried my hardest to recreate this locally and can't (the API works fine locally on both IIS and IIS Express).

If I comment out this decoration it works fine.

   <Error>
    <Message>An error has occurred.</Message>
    <ExceptionMessage>
    Method not found: 'System.Net.Http.HttpResponseMessage System.Web.Http.Filters.HttpActionExecutedContext.get_Response()'.
    </ExceptionMessage>
    <ExceptionType>System.MissingMethodException</ExceptionType>
    <StackTrace>
    at HA.Web.CartWebApiFilterAttribute.OnActionExecuted(HttpActionExecutedContext actionExecutedContext) at System.Web.Http.Filters.ActionFilterAttribute.OnActionExecutedAsync(HttpActionExecutedContext actionExecutedContext, CancellationToken cancellationToken) --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.<CallOnActionExecutedAsync>d__6.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.ActionFilterAttribute.<ExecuteActionFilterAsyncCore>d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Controllers.ActionFilterResult.<ExecuteAsync>d__5.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Filters.AuthorizationFilterAttribute.<ExecuteAuthorizationFilterAsyncCore>d__3.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at System.Web.Http.Dispatcher.HttpControllerDispatcher.<SendAsync>d__15.MoveNext()
    </StackTrace>
    </Error>

Anybody seen anything similar? Google searches have not been my friend today.

Steve