Dynamics CRM 2013 (SP1 + rollups 1,2,3) and Dynamics NAV 2013 R2 are connected with the most recent version of the connector.
I can get NAV records to sync toward CRM. CRM, however, has problems.
Standard procedure for syncing CRM -> NAV is to explicity mark records in CRM with the "Submit" button. This prepares the record for integration with NAV, and serves to prevent records in CRM unrelated to NAV from being synced over.
The connector itself, seems ready and willing to receive records from CRM. However, pressing the submit button shows a slight glitch on the form, and only after clicking away from the form page does Microsoft Dynamics CRM throw a general "invalid reference" error.
Here is the relevant script and error (Sorry if the big picture messes up the forums formatting):
And the fields that seem missing like dynamics_isreadyforintegration show up in CRM's field browser!