lightspeed 5 can not work in medium trust

I am using LightSpeed 5 (the last nightly build is not work too). I follow the instructions in http://www.mindscapehq.com/blog/index.php/2009/02/15/running-lightspeed-under-medium-trust, useless. please help.

在 System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) 在 System.Security.CodeAccessPermission.Demand() 在 System.IO.Directory.InternalGetCurrentDirectory(Boolean checkHost) 在 Mindscape.LightSpeed.Model.TypeModel.CheckEdition() 在 Mindscape.LightSpeed.Model.TypeModel.GetTypeModel(Type type) 在 . . (String , IdentifierExpression , Query ) 在 Mindscape.LightSpeed.UnitOfWork.Calculate(String calculation, IdentifierExpression attribute, Query query) 在 Mindscape.LightSpeed.UnitOfWork.Count(Query query) 在 Mindscape.LightSpeed.Linq.Plan.SingleQueryPlan.<>cDisplayClass9.b8() 在 Mindscape.LightSpeed.Linq.Plan.SingleQueryPlan.ChooseCountImplementation[T](Func1 countByFilteringList, Func2 countAttribute, Func1 countEntities) 在 Mindscape.LightSpeed.Linq.Plan.SingleQueryPlan.ExecuteCount(IUnitOfWork unitOfWork) 在 Mindscape.LightSpeed.Linq.Plan.SingleQueryPlan.ExecuteImmediate(IUnitOfWork unitOfWork, Type returnType) 在 Mindscape.LightSpeed.Linq.LinqQueryProvider.System.Linq.IQueryProvider.Execute[S](Expression expression) 在 System.Linq.Queryable.Count[TSource](IQueryable1 source)

Is there any one can help?

Thanks for reporting this, we have added in a candidate fix for this and this will be available in the next nightly build. Let us know if you continue to encounter this issue after updating.

Jeremy

Thank Jeremy.

I used the last build(version 5.02411.0). Now It report "System.Security.VerificationException". I hope you can help me to check this.

[VerificationException: 操作可能会破坏运行时稳定性。] Mindscape.LightSpeed.Model.FieldModel.GetValidations(ICustomAttributeProvider fieldInfo) +178 Mindscape.LightSpeed.Model.FieldModel..ctor(FieldInfo fieldInfo, TypeModel owningTypeModel) +451 Mindscape.LightSpeed.Model.TypeModel.CreateFieldModel(FieldInfo fieldInfo) +1053 Mindscape.LightSpeed.Model.TypeModel.InitializeValueFields(IList1 fieldInfos) +545 Mindscape.LightSpeed.Model.TypeModel.InitializeFields(ICollection1 associationModels) +40 Mindscape.LightSpeed.Model.TypeModel.LoadFields(IEnumerable1 typeModels) +164 Mindscape.LightSpeed.Model.TypeModel.GetTypeModel(Type type) +1032 ..ˆ(Query , IList ) +93 Mindscape.LightSpeed.UnitOfWork.Find(Query query, IList results) +164 Mindscape.LightSpeed.UnitOfWorkBase.Find(Query query) +122 Mindscape.LightSpeed.Linq.Plan.SingleQueryPlan.ExecuteImmediate(IUnitOfWork unitOfWork, Type returnType) +601 Mindscape.LightSpeed.Linq.LinqQueryProvider.Execute(Expression expression) +155 Mindscape.LightSpeed.Linq.LinqQuery1.GetEnumerator() +38 System.Collections.Generic.List1..ctor(IEnumerable1 collection) +446 System.Linq.Enumerable.ToList(IEnumerable1 source) +76 SCrawler.Model.Service1.GetPaged(Int32 start, Int32 limit) in Service.cs:192 SCrawler.UI.Controller.TaskController.List(HttpContext context) in d:\Document\WorkPlace\branche-simple\SCrawler.UI\Controller\TaskController.cs:19

[TargetInvocationException: 调用的目标发生了异常。] System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor) +0 System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments) +136 System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture) +549 System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) +35 Cokapp.SimpleMVC.ActionExecutor.ExecuteActionInternal(HttpContext context, InvokeInfo info) in ActionExecutor.cs:63 Cokapp.SimpleMVC.ActionExecutor.ExecuteAction(HttpContext context, InvokeInfo vkInfo) in ActionExecutor.cs:40 Cokapp.SimpleMVC.ActionHandler.ProcessRequest(HttpContext context) in ActionHandler.cs:18 Cokapp.SimpleMVC.SimpleMVCPageHandler.ProcessRequest(HttpContext context) in SimpleMVCPageHandler.cs:18 System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +808 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +165

Unfortunately this is caused by a known issue in the .NET framework (see: http://www.mindscapehq.com/forums/thread/3478 and https://connect.microsoft.com/VisualStudio/feedback/details/587594 for more detail).

Try adding the following to your config to check if that resolves this for you:

<startup useLegacyV2RuntimeActivationPolicy="true"> 
   <supportedRuntime version="v4.0" />  
</startup>

Unfortunately as you will see on the Connect ticket Microsoft is not intending to fix this in a hurry if ever.

Jeremy