Error al ejecutar alertas

En la versión 1.10.0.9 se esta ejecutando una alerta, pero el problema es que la primera vez que se ejecuta en teoría lo hace bien pero no devuelve nada de lo que el procedimiento debe devolver y por ende no aparece nada en la bandeja de inicio; entonces se ejecuta una segunda vez y es allí donde muestra el siguiente mensaje:

Aseinfo.Infrastructure.Base.Exceptions.ApplicationJobWindowsServiceException: La Alerta fue guardada correctamente, pero el servicio de ejecución de tareas no puedo iniciar la programación de la Alerta.
---> Quartz.JobPersistenceException: Couldn't store job: Unable to store Job with name: 'D18B93F9-0BC4-441B-BA5D-4394DB10E5B2' and group: 'AlertaEjecucionInmediata', because one already exists with this identification.

Server stack trace:

Exception rethrown at [0]: 
at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Quartz.Simpl.IRemotableQuartzScheduler.ScheduleJob(SchedulingContext ctxt, JobDetail jobDetail, Trigger trigger)
at Quartz.Impl.RemoteScheduler.ScheduleJob(JobDetail jobDetail, Trigger trigger)
at Aseinfo.VH4.General.Controllers.AlertaController.ScheduleJob(Alerta alerta, Boolean ejecucionInmediata, Dictionary`2 valoresParametros) in C:\vh4\VH4\General\Controllers\AlertaController.cs:line 1119
--- End of inner exception stack trace ---
at Aseinfo.VH4.General.Controllers.AlertaController.ScheduleJob(Alerta alerta, Boolean ejecucionInmediata, Dictionary`2 valoresParametros) in C:\vh4\VH4\General\Controllers\AlertaController.cs:line 1130
at Aseinfo.VH4.General.Controllers.AlertaController.StartImmediateAlerta(String id, Dictionary`2 parametros, Boolean mostrandoEnDialogo, Boolean generacionAlerta) in C:\vh4\VH4\General\Controllers\AlertaController.cs:line 691
at lambda_method(Closure , ControllerBase , Object[] )
at System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters)
at System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState)
at System.Web.Mvc.Async.AsyncResultWrapper.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.AsyncInvocationWithFilters.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult)
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<>c__DisplayClass2b.<BeginInvokeAction>b__1c()
at System.Web.Mvc.Async.AsyncControllerActionInvoker.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult)