Long error on join with where...

Trying a relatively simple query with a join, but adding a Where clause causes a MethodAccessException:

            Guid gid = custacct.CustomerAccountID;
            IEntityQuery<UserProfile> query =
                from users in RepositoryDomainContext.UserProfiles
                join p in RepositoryDomainContext.Permissions
                on users.UserProfileId equals p.UserProfileId
                where p.ElementID == gid
                select users;

            RepositoryDomainContext.ExecuteQueryAsync(query, cb => callback(cb.Results), null);

this results in the exception below.
Removing the where works perfectly, as does restructuring the query:

            IEntityQuery<UserProfile> query =
                from users in RepositoryDomainContext.UserProfiles
                join p in RepositoryDomainContext.Permissions.Where(pp => pp.ElementID == gid)
                on users.UserProfileId equals p.UserProfileId
                select users;

Any suggestions?

Cheers,
 Jason

Exception:
{System.MethodAccessException: Attempt by method 'System.Linq.Expressions.Expression.CreateLambda(System.Type, System.Linq.Expressions.Expression, System.String, Boolean, System.Collections.ObjectModel.ReadOnlyCollection`1<System.Linq.Expressions.ParameterExpression>)' to access method 'System.Linq.Expressions.Expression`1<System.Func`2<<>f__AnonymousType0`2<QuestMetrics.Manager.Model.Data.UserProfile,QuestMetrics.Manager.Model.Data.Permission>,System.Boolean>>.Create(System.Linq.Expressions.Expression, System.String, Boolean, System.Collections.ObjectModel.ReadOnlyCollection`1<System.Linq.Expressions.ParameterExpression>)' failed.
   at System.RuntimeMethodHandle.PerformSecurityCheck(Object obj, RuntimeMethodHandleInternal method, RuntimeType parent, UInt32 invocationFlags)
   at System.RuntimeMethodHandle.PerformSecurityCheck(Object obj, IRuntimeMethodInfo method, RuntimeType parent, UInt32 invocationFlags)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
   at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
   at System.Linq.Expressions.Expression.CreateLambda(Type delegateType, Expression body, String name, Boolean tailCall, ReadOnlyCollection`1 parameters)
   at System.Linq.Expressions.Expression.Lambda(Type delegateType, Expression body, String name, Boolean tailCall, IEnumerable`1 parameters)
   at System.Linq.Expressions.Expression.Lambda(Type delegateType, Expression body, ParameterExpression[] parameters)
   at IdeaBlade.Linq.TransformExpressionVisitor.VisitLambda(LambdaExpression le, Expression bodyExpr, IEnumerable`1 parameterExpressions)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpressionCore(Expression e)
   at IdeaBlade.Linq.TransformExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.LocalizingExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpression(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpressionCore(Expression e)
   at IdeaBlade.Linq.TransformExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.LocalizingExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpression(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.<VisitExpressions>b__0(Expression e)
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpressions(IEnumerable`1 expressions)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpressionCore(Expression e)
   at IdeaBlade.Linq.TransformExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.LocalizingExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpression(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.<VisitExpressions>b__0(Expression e)
   at System.Linq.Enumerable.WhereSelectEnumerableIterator`2.MoveNext()
   at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
   at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpressions(IEnumerable`1 expressions)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpressionCore(Expression e)
   at IdeaBlade.Linq.TransformExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.LocalizingExpressionVisitor.VisitExpressionCore(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.VisitExpression(Expression expr)
   at IdeaBlade.Linq.ExpressionVisitor.Visit(Expression expr)
   at IdeaBlade.Linq.LocalizingExpressionVisitor.Visit(Expression expr)
   at IdeaBlade.EntityModel.ServerEntityQuery..ctor(EntityQuery query)
   at IdeaBlade.EntityModel.EntityQuery`1.GetServerQuery()
   at IdeaBlade.EntityModel.EntityQueryFinder.get_ServerQuery()
   at IdeaBlade.EntityModel.EntityQueryFinder.Execute()
   at IdeaBlade.EntityModel.EntityManager.ExecuteQueryCore(IEntityQuery query, Boolean isAsync)
   at IdeaBlade.EntityModel.EntityManager.<ExecuteQueryAsyncCore>b__4c[T](EntityQueryOperation`1 op)
   at IdeaBlade.EntityModel.AsyncProcessor`1.Execute()
   at IdeaBlade.EntityModel.EntityManager.ExecuteQueryAsyncCore[T](AsyncProcessor`1 processor)
   at IdeaBlade.EntityModel.EntityManager.ExecuteQueryAsync[T](IEntityQuery`1 query, Action`1 userCallback, Object userState)
   at QuestMetrics.Manager.DataModel.Repositories.PermissionRepository.GetUserProfilesWithPermissions(CustomerAccount custacct, Action`1 callback, Expression`1 filter)}

Edited by jsobell - 06-May-2010 at 4:13pm