Thanks for the help Lynn. Here's a fix for future people:
My issue: I was trying to add a custom link to the vBCMS pages. They don't allow you to do that, so do this instead:
My fix:
Go to navbar_tabs template
Find
HTML Code:
<vb:if condition="$link['type'] == 'link'">
Put this code under it and edit this code to suit your needs
HTML Code:
<vb:if condition="THIS_SCRIPT == 'vbcms'">
<li id="{vb:raw sublink.name}"><a href="list.php?author/{vb:link member, {vb:raw bbuserinfo}}">My Posts</a></li>
</vb:if>