Avatars aren't working for me with Ninjaboard.• Check you have the proper permissions on your server.
(Joomla Admin => >> help >> system info >> directory permissions)
• Previously users using the Joomla FTP layer (due to not running apache with suPHP, or without necessary access permissions) caused issues with image drivers. This was fixed in Ninjaboard 1.1
• Currently NB requires GD (lib-gif/jpg/bmp) or the shell version of imagemagick (not the php native version of imagick).
Check your server config meets the requirements. (Joomla Admin => >> help >> system info >> php information)
• Previously not having cURL installed could cause issues.