Visitor Access Causing My Site to Break

On my site, a visitor has access to everything except for a category called "Exclusive Content".

I have a link in my menu to the category "Exclusive Content" and inside is a blog that is filtered just with the category "Exclusive Content". When this is enabled in Visitor access, the site breaks and shows the visitor an Internal Server Error. When I remove that rule, it's fine.

Any ideas? Or is there a better way of doing what I'm trying to do?

Edit: The problem may lie in a conflict with WP Hide Category, a plugin that does what it says. Although it never had this problem before. Looking into alternatives.

Edit: Fixed. I removed the category rule and instead put in the menu item to be hidden from visitors. That did the trick.