I followed everything that was told and everything was working fine in Apache server. Then i transfered the whole site to IIS and disabled clean url's. After that there was no thumbnail nor any images. When i checked the link it was showing
http://abc.com/index.phpsites/all/modules/brilliant_gallery/image.php?im...
The link was wrong because it is "index.php" and then "sites" immediately. Please help me.