Error in Checkout Order in Debug mode

Hello everybody!

I had to change the ordering logic and in the process of debugging, when go to the «Shipping» section, I get an error 

[SmartException: At least one shipping rate computation method provider is required to be active.]
 SmartStore.Services.Shipping.ShippingService.LoadActiveShippingRateComputationMethods(Int32 storeId) in ...\SmartStoreNET-2.6.x\src\Libraries\SmartStore.Services\Shipping\ShippingService.cs:130
 SmartStore.Services.Shipping.ShippingService.GetShippingOptions(IList`1 cart, Address shippingAddress, String allowedShippingRateComputationMethodSystemName, Int32 storeId) in ...\SmartStoreNET-2.6.x\src\Libraries\SmartStore.Services\Shipping\ShippingService.cs:387
 SmartStore.Web.Controllers.CheckoutController.PrepareShippingMethodModel(IList`1 cart) in ...\SmartStoreNET-2.6.x\src\Presentation\SmartStore.Web\Controllers\CheckoutController.cs:192
 SmartStore.Web.Controllers.CheckoutController.ShippingMethod() in ...\SmartStoreNET-2.6.x\src\Presentation\SmartStore.Web\Controllers\CheckoutController.cs:606But in a configurator the «Shipping.FixedRate» method is marked as active.

If compile project in «Release», deploy project to IIS server, go to the app and do the same, then there is no error!

How to fix this error?

Hello, Marcus!

In "All settings" there is one record with key = "shippingsettings.activeshippingratecomputationmethodsystemnames" Value = "Shipping.FixedRate" Store = "All stores value".

Error appears only when you launches project from Visual Studio (2015) in debug mode...

Have you tried obvious things like toggling different computation methods, restart the application, compile the solution?

I tried the different compilation (Debug, Release, PluginDev), different computers with different operating system (Win7 / Win 8.1).  

And if launch Store from Visual Studio (F5), then always throw this exception then I try to go to choice Shipping Methods or Payment Methods (if comment out a  Shipping Methods choice in source code). 

Method "LoadAllShippingRateComputationMethods(storeId);" always returns empty collection (for Shipping).

May be SmartStore.Services needs to be launched as a service?

No. Can you debug LoadActiveShippingRateComputationMethods to get the reason why it doesn't return any computation method?

Hello, Marcus!

Can you tell me where reading RateComputationMethods from database?