my problem is;

Server Error in '/' Application.

Login failed for user 'rnslw'.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'rnslw'.

Source Error:

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[SqlException (0x80131904): Login failed for user 'rnslw'.]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +428
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
System.Data.SqlClient.SqlConnection.Open() +122
SD.LLBLGen.Pro.ORMSupportClasses.DataAccessAdapterBase.OpenConnection() +179
SD.LLBLGen.Pro.ORMSupportClasses.DataAccessAdapterBase.PrepareQueryExecution(IQuery queryToExecute, Boolean forceConnectionSet) +62
SD.LLBLGen.Pro.ORMSupportClasses.DataAccessAdapterBase.ExecuteMultiRowRetrievalQuery(IRetrievalQuery queryToExecute, IEntityFactory2 entityFactory, IEntityCollection2 collectionToFill, IFieldPersistenceInfo[] fieldsPersistenceInfo, Boolean allowDuplicates, IEntityFields2 fieldsUsedForQuery) +135
SD.LLBLGen.Pro.ORMSupportClasses.DataAccessAdapterBase.FetchEntityCollectionInternal(IEntityCollection2 collectionToFill, IRelationPredicateBucket& filterBucket, Int32 maxNumberOfItemsToReturn, ISortExpression sortClauses, ExcludeIncludeFieldsList excludedIncludedFields, Int32 pageNumber, Int32 pageSize) +714
SD.LLBLGen.Pro.ORMSupportClasses.DataAccessAdapterBase.FetchEntityCollection(IEntityCollection2 collectionToFill, IRelationPredicateBucket filterBucket, Int32 maxNumberOfItemsToReturn, ISortExpression sortClauses, IPrefetchPath2 prefetchPath, ExcludeIncludeFieldsList excludedIncludedFields, Int32 pageNumber, Int32 pageSize) +126
SD.LLBLGen.Pro.ORMSupportClasses.DataAccessAdapterBase.FetchEntityCollection(IEntityCollection2 collectionToFill, IRelationPredicateBucket filterBucket, Int32 maxNumberOfItemsToReturn, ISortExpression sortClauses, IPrefetchPath2 prefetchPath) +28
MonoSoftware.LLBLGen.Repository.FetchEntityCollection(IEntityCollection2 collectionToFill, IRelationPredicateBucket filterBucket, Int32 maxNumberOfItemsToReturn, ISortExpression sortClauses, IPrefetchPath2 prefetchPath) +59
MonoSoftware.MonoX.Repositories.LocalizationRepository.GetLanguageSettings() +61
MonoSoftware.MonoX.Utilities.LocalizationUtility.GetLanguageSettings() +95
MonoSoftware.MonoX.Utilities.LocalizationUtility.GetDefaultCultureName() +262
MonoSoftware.MonoX.Utilities.LocalizationUtility.GetLocalizationCultureName() +319
MonoSoftware.MonoX.Utilities.LocalizationUtility.GetCurrentLanguageId() +64
MonoSoftware.MonoX.Caching.MonoXCacheManager.get_LanguageId() +7
MonoSoftware.Web.Caching.CacheManager.€(Object[] keyParameters) +257
MonoSoftware.Web.Caching.CacheManager.Get(Object[] keyParameters) +76
MonoSoftware.MonoX.Utilities.MonoXUtility.BindListControl(Boolean useCache, IEntityFactory2 factory, ListControl list, IEntityField2 displayFieldName, IEntityField2 valueFieldName, Boolean noPreference, String preferenceValue, IRelationPredicateBucket bucket, IDataAccessAdapter adapter) +157
MonoX_Installer_NewApplication.Page_Init(Object sender, EventArgs e) +453
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
System.Web.UI.Control.OnInit(EventArgs e) +99
System.Web.UI.Page.OnInit(EventArgs e) +12
MonoSoftware.MonoX.Installer.BaseInstallerPage.OnInit(EventArgs e) +57
System.Web.UI.Control.InitRecursive(Control namingContainer) +333
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +378

Version Information: Microsoft .NET Framework Version:2.0.50727.4206; ASP.NET Version:2.0.50727.4209

vps properties:
windows 2008 server
sqlexpress2008
.net2.0,.net3.0,.net3.5 and .net4.0 allredy installed.