Oh, ok, that message. I wasn’t understanding, apparently. Clicking the button does nothing???
That said, the db update is very minor. It just adds a new column to the table that Connections saves the main entry data to.
As for editing your profile… I believe the forum uses the Gravatar image registered to your email address. Since you have the default image, my guess is you need to create a Gravatar account and register your email address with it. after you do that, you can change the image to anything you want.