“Value cannot be null.Parameter name: attributeName” when running Linq query with join

If you run the following query using the CRM 2011 Linq provider (I'm using Linq pad here):

from u in SystemUserSet where u.Id == new Guid("f19f4c09-965b-e011-ab82-000c2957f385") select u

All is well. However, if you add a join:

from u in SystemUserSet join t in TerritorySet on u.Territ... [More]

How to change the default Lookup type on ‘Customer’ fields

In CRM 4, this used to be a very popular request: "Please change the default lookup type on the customer field to contact" Also… "Please limit the lookup type on the customer field to only allow selection of contacts" In CRM 2011, there still doesn't seem to be an easy way of doing this, ... [More]