security exception when constrcuting windsor container

[PB]

I am trying to run Castle in medium trust env. I have added the APTC tag and the [assembly: SecurityRules(System.Security.SecurityRuleSet.Level1)] to Castle.Core and Castle.Windsor which allowed the assemblies to run in medium trust.

but now i get security exception while initialising the container.

at Castle.Core.Internal.PermissionUtil.IsGranted(IPermission permission) at Castle.MicroKernel.DefaultKernel..ctor(IDependencyResolver resolver, IProxyFactory proxyFactory) at Castle.MicroKernel.DefaultKernel..ctor() at Castle.Windsor.WindsorContainer..ctor() at xxxxxxx.xxx.Common.Facilities.ContainerFactory..ctor() in C:\Source\xxx\xxx\xxx.xxx\Facilities\ContainerFactory.cs:line 18 at

here's the conatinerfactory class

public sealed class ContainerFactory

{

    private static volatile ContainerFactory _instance;

    private static readonly object SyncRoot = new object();

    private static IWindsorContainer _container;

    private ContainerFactory()

    {

        // Initialize windsor container.

        _container = new WindsorContainer();

        // NOTE: register concreate type with windsor

        // container.Register(Component.For<FooObjectContext>());

        _container.Install(FromAssembly.Named("xxxxxxx.xxx.xxxxxxxxx"));

    }

    public static IWindsorContainer CreateContainer()

    {

        if (_instance == null)

        {

            lock (SyncRoot)

            {

                if (_instance == null)

                    _instance = new ContainerFactory();

            }

        }

        return _container;

    }

}

What can I do to fix this. Thanks