When debugging an endpoint and it's queues do not exist then an exception is thrown.

[CallumHibbert]

I don't really get this but it happens all the time no matter what I do. If I debug an endpoint and its queues do no exist, then I get a NullReference exception from inside the NSB code base:

Object reference not set to an instance of an object.
  at NServiceBus.Unicast.Queuing.QueuesCreator.Install(String identity) in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Unicast\Queuing\QueuesCreator.cs:line 44
  at NServiceBus.Installer`1.<InstallOtherInstallers>b__0(INeedToInstallSomething i) in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Install.cs:line 105
  at System.Collections.Generic.List`1.ForEach(Action`1 action)
  at NServiceBus.Installer`1.InstallOtherInstallers() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Install.cs:line 104
  at NServiceBus.Installer`1.Install() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Install.cs:line 93
  at NServiceBus.Hosting.Windows.Profiles.Handlers.WindowsInstallerRunner.Run() in c:\BuildAgent\work\d4de8921a0aabf04\src\hosting\NServiceBus.Hosting.Windows\Profiles\Handlers\WindowsInstallerRunner.cs:line 30
  at NServiceBus.Configure.<Initialize>b__14(IWantToRunWhenConfigurationIsComplete o) in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Configure.cs:line 375
  at System.Collections.Generic.List`1.ForEach(Action`1 action)
  at NServiceBus.Configure.Initialize() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Configure.cs:line 374
  at NServiceBus.Configure.CreateBus() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Configure.cs:line 305
  at NServiceBus.Hosting.GenericHost.Start() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Hosting\GenericHost.cs:line 29
  at NServiceBus.Hosting.Windows.WindowsHost.Start() in c:\BuildAgent\work\d4de8921a0aabf04\src\hosting\NServiceBus.Hosting.Windows\WindowsHost.cs:line 55
  at NServiceBus.Hosting.Windows.Program.<>c__DisplayClassd.<Main>b__5(WindowsHost service) in c:\BuildAgent\work\d4de8921a0aabf04\src\hosting\NServiceBus.Hosting.Windows\Program.cs:line 76
  at Topshelf.Internal.ControllerDelegates`1.StartActionObject(Object obj) in c:\Projects\TopShelfForNSB\src\Topshelf\Internal\ControllerDelegates.cs:line 17
  at Topshelf.Internal.IsolatedServiceControllerWrapper`1.<>c__DisplayClass2.<set_StartAction>b__1(TService service) in c:\Projects\TopShelfForNSB\src\Topshelf\Internal\IsolatedServiceControllerWrapper.cs:line 65
  at Topshelf.Internal.ServiceController`1.<.cctor>b__1(ServiceController`1 sc) in c:\Projects\TopShelfForNSB\src\Topshelf\Internal\ServiceController.cs:line 35
  at Magnum.StateMachine.LambdaAction`1.Execute(T instance, Event event, Object parameter) in :line 0
  at Magnum.StateMachine.EventActionList`1.Execute(T stateMachine, Event event, Object parameter) in :line 0

However, if I run the endpoint without debugging then it creates the queues just fine. I'm puzzled.

[andreasohlund]

Installers are run automatically when you're in debug mode

On Thu, Oct 24, 2013 at 12:40 PM, CallumHibbert notifications@github.comwrote:

I don't really get this but it happens all the time no matter what I do.
If I debug an endpoint and its queues do no exist, then I get a
NullReference exception from inside the NSB code base:

Object reference not set to an instance of an object.
at NServiceBus.Unicast.Queuing.QueuesCreator.Install(String identity) in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Unicast\Queuing\QueuesCreator.cs:line 44
at NServiceBus.Installer1.<InstallOtherInstallers>b__0(INeedToInstallSomething i) in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Install.cs:line 105 at System.Collections.Generic.List1.ForEach(Action1 action) at NServiceBus.Installer1.InstallOtherInstallers() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Install.cs:line 104
at NServiceBus.Installer1.Install() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Install.cs:line 93 at NServiceBus.Hosting.Windows.Profiles.Handlers.WindowsInstallerRunner.Run() in c:\BuildAgent\work\d4de8921a0aabf04\src\hosting\NServiceBus.Hosting.Windows\Profiles\Handlers\WindowsInstallerRunner.cs:line 30 at NServiceBus.Configure.<Initialize>b__14(IWantToRunWhenConfigurationIsComplete o) in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Configure.cs:line 375 at System.Collections.Generic.List1.ForEach(Action1 action) at NServiceBus.Configure.Initialize() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Configure.cs:line 374 at NServiceBus.Configure.CreateBus() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Configure.cs:line 305 at NServiceBus.Hosting.GenericHost.Start() in c:\BuildAgent\work\d4de8921a0aabf04\src\NServiceBus.Core\Hosting\GenericHost.cs:line 29 at NServiceBus.Hosting.Windows.WindowsHost.Start() in c:\BuildAgent\work\d4de8921a0aabf04\src\hosting\NServiceBus.Hosting.Windows\WindowsHost.cs:line 55 at NServiceBus.Hosting.Windows.Program.<>c__DisplayClassd.<Main>b__5(WindowsHost service) in c:\BuildAgent\work\d4de8921a0aabf04\src\hosting\NServiceBus.Hosting.Windows\Program.cs:line 76 at Topshelf.Internal.ControllerDelegates1.StartActionObject(Object obj) in c:\Projects\TopShelfForNSB\src\Topshelf\Internal\ControllerDelegates.cs:line 17
at Topshelf.Internal.IsolatedServiceControllerWrapper1.<>c__DisplayClass2.<set_StartAction>b__1(TService service) in c:\Projects\TopShelfForNSB\src\Topshelf\Internal\IsolatedServiceControllerWrapper.cs:line 65 at Topshelf.Internal.ServiceController1.<.cctor>b__1(ServiceController1 sc) in c:\Projects\TopShelfForNSB\src\Topshelf\Internal\ServiceController.cs:line 35 at Magnum.StateMachine.LambdaAction1.Execute(T instance, Event event, Object parameter) in :line 0
at Magnum.StateMachine.EventActionList`1.Execute(T stateMachine, Event event, Object parameter) in :line 0

However, if I run the endpoint without debugging then it creates the
queues just fine. I'm puzzled.

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[udidahan]

So we need a better exception.