I just deleted an old thread full of broken image links, but it doesn't appear that it was fully deleted. If I go to the old URL I get " Error You do not have permission to view this page or perform this action.", rather than the page that says it doesn't exist. I'm an admin with full privileges, confirmed by analyzing my permissions. What could cause this, and how should I start trying to resolve it? Unrelated but on the topic of permissions, how do you reset custom user permissions? A long time ago I set a few for our moderators, but I'd now like only the user groups to apply.