404 not found errors

Hi there

GREAT plugin!

I have a little issue though. When I click upload image or video, I get 404 errors. Media uploads do work when editing pages/posts, and in dashboard status.
This is a new install. I'm running the Pure theme. http://puretheme.themeloom.com/

A couple of questions if I may.
Is there a way to restrict video uploads?
It would be great if there was a shortcode to allow for more control over where status appears on a page. Is this possible?