Newbies can't post images unless you rank up to jr member or purchase a Copper membership.
Newbies can now pay a small fee to enable images.
And if you rank up or purchased already you need to a code like this one.
[img]http://www.primevalcoin.com/Gamecraft.jpg[/img]
Though you added the code it says
(FORUM: disabled on this page for security.)
And that's probably because you're still a newbie.