title: Error while removing custom entity in Crm 2011
body: <p>I can't delete a custom entity in MS CRM 2011 Rollup 11. While I'm trying to delete entity (it takes 5-7 min then there is an error) CRM freezes. </p>
  
  <p>SQL profiler and DiagTool didn't give an answer. There were some errors, but they did not relate to the work of CRM. I've checked deletion of relationships, it's impossible too.</p>