Record you are trying to access cannot be found about vtmoduledesigner

[makerdrone]

@jayo2005, I had a similar issue recently. The problem is caused by the database table to which the new field is bound.
The Contacts module is spread across multiple tables in the database, but Module designer automatically suggests the vtiger_contacts table which does not exist.

A solution that worked for me was to edit the Table name field and use one of the existing tables of the module, like is used by the built-in fields

In your case the more suitable table for the related module field would probably be vtiger_contactdetails