Custom ribbon button action always disabled when command is defined

The issue is that the feature is not enabled that allows the layouts.

To fix the issue go to Site Actions -> Site Settings in the upper right corner.

Under "Site Collection Administration" click on "Site Collection Features".

Look for "SharePoint Server Publishing Infrastructure" and activate it. It might take a moment to load.

Next return to "Site Settings" and click on "Manage Site Features"

Look for "SharePoint Server Publishing" and activate it. It might take a moment to load.