[NullReferenceException: Object reference not set to an instance of an object.]
System.Data.Linq.SqlClient.QueryConverter.VisitInvocation(InvocationExpression invoke) +1250
System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +1133
System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp) +34
System.Data.Linq.SqlClient.QueryConverter.VisitBinary(BinaryExpression b) +49
System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +460
System.Data.Linq.SqlClient.QueryConverter.VisitExpression(Expression exp) +34
System.Data.Linq.SqlClient.QueryConverter.VisitWhere(Expression sequence, LambdaExpression predicate) +159
System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +874
System.Data.Linq.SqlClient.QueryConverter.VisitSelect(Expression sequence, LambdaExpression selector) +39
System.Data.Linq.SqlClient.QueryConverter.VisitInner(Expression node) +874
System.Data.Linq.SqlClient.QueryConverter.ConvertOuter(Expression node) +133
System.Data.Linq.SqlClient.SqlProvider.BuildQuery(Expression query, SqlNodeAnnotations annotations) +168
System.Data.Linq.SqlClient.SqlProvider.System.Data.Linq.Provider.IProvider.Execute(Expression query) +165
System.Data.Linq.DataQuery`1.System.Collections.Generic.IEnumerable<T>.GetEnumerator() +55
System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +430
System.Linq.Enumerable.ToList(IEnumerable`1 source) +73
Champville.Models.SharedRepository.GetActivityById(Int32 id, String language) +1907
Champville.Controllers.ActivityDetailsController.Index(String title, Int32 id) +1050
lambda_method(Closure , ControllerBase , Object[] ) +194
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +229
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +35
System.Web.Mvc.Async.AsyncControllerActionInvoker.<BeginInvokeSynchronousActionMethod>b__39(IAsyncResult asyncResult, ActionInvocation innerInvokeState) +39
System.Web.Mvc.Async.WrappedAsyncResult`2.CallEndDelegate(IAsyncResult asyncResult) +77
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +42
System.Web.Mvc.Async.AsyncInvocationWithFilters.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3d() +72
System.Web.Mvc.Async.<>c__DisplayClass46.<InvokeActionMethodFilterAsynchronouslyRecursive>b__3f() +396
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +42
System.Web.Mvc.Async.<>c__DisplayClass2b.<BeginInvokeAction>b__1c() +38
System.Web.Mvc.Async.<>c__DisplayClass21.<BeginInvokeAction>b__1e(IAsyncResult asyncResult) +188
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +38
System.Web.Mvc.Controller.<BeginExecuteCore>b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +32
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +52
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +39
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +38
System.Web.Mvc.MvcHandler.<BeginProcessRequest>b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +46
System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +73
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +38
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +431
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +75
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +158
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