Thread:Project:Support desk/Thumbnails creating but not showing/reply

If you copy the src URL of a thumbnail and browse it directly, what do you get? Thy that with a browser other than Internet Explorer, since IE won't display any useful error message.

If you get a "forbidden" error, it's a permission issue. If you get a "Not found" then something is not properly configured on the server and the URL is mapping to a path in the server that doesn't exist. You can also see the IIS error logs