Notification Subscription API

Hi, I'm trying to create a custom notification sender task. I've created a dummy task for testing purposes, but can't get it to work. I hope someone can guide me the right direction.

My dummy method:

public TestMethod()
        {
            var documentCategories = new DataQuery("Radware.Content.subscriptionCategories").Execute().Tables[0];
            string joinedStr = string.Join(",",string.Format("'{0}'",documentCategories.AsEnumerable().Select(r => r.Field<string>("CategoryName")).ToArray()));
            DataTable subscription = NotificationSubscriptionInfoProvider.GetSubscriptions("[SubscriptionEventSource] = 'Content' AND [SubscriptionEventData1] in ("+joinedStr+",'/%')", "[SubscriptionID]").Tables[0];           
            var list = TableToList<NotificationSubscriptionInfo>(subscription);
            CMSEmailNotificationGateway gateway = new CMSEmailNotificationGateway();
            gateway.GatewayName = "CMS.EmailGateway";
            foreach (NotificationSubscriptionInfo item in list)
            {
                gateway.NotificationSubscriptionObj = item;
                gateway.SendNotification();
            }
        }

TableToList<NotificationSubscriptionInfo>(subscription) - is a custom function that maps table to list of objects.

Works fine.

The method completes without exceptions, but in the event log I get this message :

Event ID: 154355 Event type: Error Event time: 9/17/2014 2:41:31 PM Source: CMSEmailNotificationGateway Event code: EXCEPTION User ID: 65 User name: public IP address: Description: Message: The type initializer for 'CMS.EmailEngine.EmailHelper' threw an exception.

Exception type: System.TypeInitializationException Stack Trace: at CMS.EmailEngine.EmailHelper.GetSiteId(String siteName) at CMS.EmailEngine.EmailSender.SendEmail(String siteName, EmailMessage message, Boolean sendImmediately, String setName, Int32 setRelatedId) at CMS.Notifications.CMSEmailNotificationGateway.SendNotification()

Message: Could not load file or assembly 'CMS.FileSystemStorage' or one of its dependencies. The system cannot find the file specified.

Exception type: System.IO.FileNotFoundException Stack Trace: at System.Reflection.RuntimeAssembly._nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) at System.Reflection.RuntimeAssembly.nLoad(AssemblyName fileName, String codeBase, Evidence assemblySecurity, RuntimeAssembly locationHint, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) at System.Reflection.RuntimeAssembly.InternalLoadAssemblyName(AssemblyName assemblyRef, Evidence assemblySecurity, RuntimeAssembly reqAssembly, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean throwOnFileNotFound, Boolean forIntrospection, Boolean suppressSecurityChecks) at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, IntPtr pPrivHostBinder, Boolean forIntrospection) at System.Reflection.RuntimeAssembly.InternalLoad(String assemblyString, Evidence assemblySecurity, StackCrawlMark& stackMark, Boolean forIntrospection) at System.Reflection.Assembly.Load(String assemblyString) at CMS.Base.ClassHelper.GetAssemblyInternal(String assemblyName) at CMS.IO.AbstractStorageProvider.get_ProviderAssembly() at CMS.IO.StorageProvider.CreateDirectoryProviderObject() at CMS.IO.AbstractStorageProvider.get_DirectoryProviderObject() at CMS.IO.DirectoryHelper.EnsureDiskPathInternal(String path, String startingPath) at CMS.IO.DirectoryHelper.EnsureDiskPath(String path, String startingPath) at CMS.EmailEngine.EmailHelper..cctor() Machine name: IDOG-W7 Event URL: URL referrer: User agent:

Any suggestions?