I have gone through and fixed many of the graphics which appear find when I look at the site but if I look at the site in incognito mode the images (or at least some of them) are still broken. How do I resolve that? Am I the only one seeing broken images at community.thrivethrough.com?

It appears it was a cache issue. I went through and manually deleted all broken images from all users. This took some time. The thought being that it would revert to the default images of the first letter of the username. All appeared fine and in good working order until I clear my cache. Now they are broken again. What gives? Any ideas on how I could resolve this?