Thread:Project:Support desk/can't find CSS after upgrade from 1.15 to 1.20/reply (3)

What you describe seems to be a different issue: While Joe could not get contents from load.php, the image file skins/common/images/wiki.png, which you say you cannot see, is not displayed using load.php. However, if you generally cannot see images from the folder skins/, your problem might have the same cause as Joe's: Add a rewrite rule to .htaccess, which allows reading files from the folder skins/.