System.ArgumentException: Item has already been added.
On defining the datamodel we run into the following problems:
System.ArgumentException: Item has already been added. Key in dictionary: 'Relation_Address' Key being added: 'Relation_Address'
With every multiple-to-multiple relationship we get this error and then the model gets corrupted.
I also happens with single-to-single relationship. In this situation we are able to proceed after pressing 'continue'
We even get these errors when we start with a fresh new database, so the cause would most likely not be in the tables we already created.
Any clue what could be wrong?
System.ArgumentException: Item has already been added. Key in dictionary: 'Relation_Address' Key being added: 'Relation_Address' at System.Collections.Hashtable.Insert(Object key, Object nvalue, Boolean add) at BizAgi.EntityManager.CEntityMD.GetFactsMetadata() at BizAgi.EntityManager.CEntityMD.get_Facts() at BizAgiStudio.EntityManagerPlugin.Diagram.Wizards.CreateRelationship.Steps.Step3_SelectTypeRelationship.OnValidateFinish(Object sender, CancelEventArgs e) at Vision.Forms.Wizard.SequentialWizard.CtrlSequentialWizard.ExecuteFinish(Object sender) at DevComponents.DotNetBar.ButtonX.OnClick(EventArgs e) at DevComponents.DotNetBar.ButtonX.OnMouseUp(MouseEventArgs e) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)