Server Error in '/' Application.

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[NullReferenceException: Object reference not set to an instance of an object.]
   NHibernate.Linq.Visitors.WhereJoinDetector.VisitMemberExpression(MemberExpression expression) +61
   NHibernate.Linq.Visitors.WhereJoinDetector.VisitExpression(Expression expression) +61
   Remotion.Linq.Clauses.Expressions.PartialEvaluationExceptionExpression.VisitChildren(ExpressionTreeVisitor visitor) +60
   NHibernate.Linq.Visitors.WhereJoinDetector.VisitExpression(Expression expression) +61
   Remotion.Linq.Parsing.ExpressionTreeVisitor.VisitMethodCallExpression(MethodCallExpression expression) +73
   NHibernate.Linq.Visitors.WhereJoinDetector.VisitExpression(Expression expression) +61
   Remotion.Linq.Clauses.Expressions.PartialEvaluationExceptionExpression.VisitChildren(ExpressionTreeVisitor visitor) +60
   NHibernate.Linq.Visitors.WhereJoinDetector.VisitExpression(Expression expression) +61
   Remotion.Linq.Parsing.ExpressionTreeVisitor.VisitBinaryExpression(BinaryExpression expression) +85
   NHibernate.Linq.Visitors.WhereJoinDetector.VisitBinaryExpression(BinaryExpression expression) +55
   NHibernate.Linq.Visitors.WhereJoinDetector.VisitExpression(Expression expression) +61
   Remotion.Linq.Clauses.WhereClause.TransformExpressions(Func`2 transformation) +56
   NHibernate.Linq.Visitors.WhereJoinDetector.Transform(WhereClause whereClause) +117
   Remotion.Linq.QueryModelVisitorBase.VisitBodyClauses(ObservableCollection`1 bodyClauses, QueryModel queryModel) +261
   Remotion.Linq.QueryModelVisitorBase.VisitQueryModel(QueryModel queryModel) +82
   NHibernate.Linq.Visitors.QueryModelVisitor.GenerateHqlQuery(QueryModel queryModel, VisitorParameters parameters, Boolean root) +231
   NHibernate.Linq.NhLinqExpression.Translate(ISessionFactoryImplementor sessionFactory, Boolean filter) +242
   NHibernate.Hql.Ast.ANTLR.ASTQueryTranslatorFactory.CreateQueryTranslators(IQueryExpression queryExpression, String collectionRole, Boolean shallow, IDictionary`2 filters, ISessionFactoryImplementor factory) +58
   NHibernate.Engine.Query.QueryPlanCache.GetHQLQueryPlan(IQueryExpression queryExpression, Boolean shallow, IDictionary`2 enabledFilters) +416
   NHibernate.Impl.AbstractSessionImpl.GetHQLQueryPlan(IQueryExpression queryExpression, Boolean shallow) +158
   NHibernate.Impl.AbstractSessionImpl.CreateQuery(IQueryExpression queryExpression) +139
   NHibernate.Linq.DefaultQueryProvider.PrepareQuery(Expression expression, IQuery& query, NhLinqExpression& nhQuery) +124
   NHibernate.Linq.DefaultQueryProvider.Execute(Expression expression) +37
   NHibernate.Linq.DefaultQueryProvider.Execute(Expression expression) +25
   Sino.Siave.Controllers.BaseController.CarregarPermissoes(Boolean sobrescrever) +639
   Sino.Siave.Controllers.BaseController.OnActionExecuting(ActionExecutingContext filterContext) +2523
   Sino.Siave.Controllers.DocumentosController.OnActionExecuting(ActionExecutingContext filterContext) +26
   System.Web.Mvc.Async.AsyncControllerActionInvoker.InvokeActionMethodFilterAsynchronously(IActionFilter filter, ActionExecutingContext preContext, Func`1 nextInChain) +99
   System.Web.Mvc.Async.<>c__DisplayClass37.<BeginInvokeActionMethodWithFilters>b__31(AsyncCallback asyncCallback, Object asyncState) +272
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +169
   System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters, AsyncCallback callback, Object state) +291
   System.Web.Mvc.Async.<>c__DisplayClass25.<BeginInvokeAction>b__1e(AsyncCallback asyncCallback, Object asyncState) +753
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
   System.Web.Mvc.Async.AsyncControllerActionInvoker.BeginInvokeAction(ControllerContext controllerContext, String actionName, AsyncCallback callback, Object state) +418
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__17(AsyncCallback asyncCallback, Object asyncState) +49
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
   System.Web.Mvc.Controller.BeginExecuteCore(AsyncCallback callback, Object state) +540
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
   System.Web.Mvc.Controller.BeginExecute(RequestContext requestContext, AsyncCallback callback, Object state) +464
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__2(AsyncCallback asyncCallback, Object asyncState) +129
   System.Web.Mvc.Async.WrappedAsyncResult`1.Begin(AsyncCallback callback, Object state, Int32 timeout) +170
   System.Web.Mvc.MvcHandler.BeginProcessRequest(HttpContextBase httpContext, AsyncCallback callback, Object state) +342
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +965
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +172
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +158