mac os not allowing pgadmin to view

here is a screen shot of what i am experiencing -- Thanks, Steven Schienschang

Foreign key indexes sometimes automatically named, sometimes not

Most of the time, when I create a foreign key, the covering index is automatically named and generated, and the table that gets the foreign key also gets an index with a name beginning with "fki".  But sometimes, when I try to save the FK, I get an error message asking me to supply a name for th