public function compatibility_notice() {

			$mopath = $this->pluginDir . 'lang/';
			$domain = 'the-events-calendar';

			// If we don't have Common classes load the old fashioned way
			if ( ! class_exists( 'Tribe__Main' ) ) {
				load_plugin_textdomain( $domain, false, $mopath );
			} else {
				// This will load `wp-content/languages/plugins` files first
				Tribe__Main::instance()->load_text_domain( $domain, $mopath );
			}

			$url = add_query_arg( array(
				'tab'       => 'plugin-information',
				'plugin'    => 'event-tickets',
				'TB_iframe' => 'true',
			), admin_url( 'plugin-install.php' ) );

			echo '<div class="error"><p>'
			. sprintf(
				'%1s <a href="%2s" class="thickbox" title="%3s">%4s</a>.',
				esc_html__( 'To continue using The Events Calendar, please install the latest version of', 'the-events-calendar' ),
				esc_url( $url ),
				esc_html__( 'Event Tickets', 'the-events-calendar' ),
				esc_html__( 'Event Tickets', 'the-events-calendar' )
				) .
			'</p></div>';

		}