I've recently upgraded to 5.1.4 and I went to  look at the permissions for a page.  To my dismay ALL of the check boxes are empty.  I verfied the permissions are still there in the database as only the right people can view/edit pages, but for some reason I don't see any values checked on the screen.  I tried to make it so admins can view/edit and I saw the check boxes, but as soon as I click update the check boxes get cleared.  The database seems to still have the settings, but i can't visually see it.

I read somewhere that it's supposed to be a green check or a red 'X' for granted/denied and I have verifed that the images exist in the proper folder on the server and they have the proper permissions.  Any ideas?

This is happening on all pages (well at least the 20 or so I checked) and all the modules I've checked on those pages (at least the 50+ I checked).

That line is in there, up in the ConfigSections area at the top.

It also has a line referencing the permissions folder:

<permissions defaultProvider="CorePermissionProvider">
      <providers>
        <clear />
        <add name="CorePermissionProvider" type="DotNetNuke.Security.Permissions.CorePermissionProvider, DotNetNuke.Provider.CorePermissionProvider" providerPath="~\Providers\PermissionProviders\CorePermissionProvider\" />
      </providers>
</permissions>

I checked my bin folder and the dll for DotNetNuke.Provider.CorePermissionProvider.dll is 5.1.1.0