I recently wrote a LINQ using joins, all seemed fine, but was still getting the attributeName exception. Finally this post came to rescue.

http://www.develop1.net/public/post/e2809cValue-cannot-be-nullParameter-name-attributeNamee2809d-when-running-Linq-query-with-join.aspx

Hope it helps.

 


Filed under: CRM, CRM 2011, CRM 2013, Microsoft Dynamics CRM Tagged: CRM, CRM 2011, CRM 2013, Microsoft Dynamics CRM