AX/CRM Connector issues

Hi,
Getting this "Value cannot be null. Parameter name: type "error when trying to configure the Connector after import the services again. The message is very vague. I cannot see anything in the application log. Can you point me in some direction to find the cause of this? My table structure is as follows. 3 fiedls (name, stdate, enddate) None of the field are mandatory.
Regards,
Andre