The fix will be available with the release. I'll send a notice. 

This is a bug. 

Hi, 

I've looked on your model and reproduced  error.  Tables "attachment" and "comments" have the same name of primary key constraint. Primary key constraint name must be unique. Please change the name or "Unset" property. Check other tables also. 

The fix is on production already. 

Here is a short instruction how to set default values.

1. Go to the model details page (Control-m)



2.  Click "Additional Properties" on the right side

3. You'll get that screen:



4. Change default values.
5. Back to the diagram
6. Add new tables. Every new table will have "on clause" set.


Hope this helps. Sorry for delay.

Hi,

We've added that validation.  Please check it and let's us know what you think about it.