By default users have no icons as when you install the hack their "iconpath" field is left blank. Blank to the script means that there is no image to display. A "0" in the "iconpath" list tells the script that the user has a custom icon and to retrieve it from the custom_avatar table. Anything else means the Icon is to be retrieved from the path that is stored in the "custom_avatar" field.

You may not understand what I just said but if everything is done correctly then you should not have broken images.

I see the user "zelebron" has a broken image. His broken image leads to "http://www.gamingdreams.jumpworld.net/vb/pic.php?id=18"

The script thinks he has a custom_avatar and he must not actually have one. This behavior can not normally occur so I must assume you messed up somewhere when installing the hack. Can you look at the database for this user and tell me what is in the "iconpath" field?