Just received a VM from Cat. He has turned off that ability for all users to promote posting in the main forum more, porivding a link to the Minecraft section. Well, that puts a hurdle in our path.
That's odd... I just double checked the group settings. It should have allowed you to post unless you have something against your account that would revoke that privilege to begin with.
I just had an idea! Since you are recognized as one of the most creative Minecrafters, you should make a creative-minecrafting group here! So we could do group projects and stuff.