Yes, it was that simple! Thanks for the tip.

I've just upgraded from the beta version to 1.0 and the Laygridder settings pages are no longer available, only the License Key page:

When I try to access the pages directly (e.g. /wp-admin/admin.php?page=laygridder-textformats) it gives the error message 'Sorry, you are not allowed to access this page.'