undefined index : page

Hey no problem I didn’t ethier so I never saw your reply until now.
Here’s two more to add that both occur on the admin page:

Undefined index: php @ class-tha-hooks-interface-admin.php on line 394
Undefined index: shortcode @ class-tha-hooks-interface-admin.php on line 402

Just added two more variables for the checked parameters and if they weren’t set then returned empty. Probably a cleaner way to write it, but it seems to fix it:

public function field_cb( $args ) {
		$hooks_group = $args[0];
		$hook_name = $args[1];
		$hook_description = $args[2];
		$output_field_name = 'tha_hooks_interface_' . $hooks_group . '[' . $hook_name . '][output]';
        $php_field_name = 'tha_hooks_interface_' . $hooks_group . '[' . $hook_name . '][php]';
		$shortcode_field_name = 'tha_hooks_interface_' . $hooks_group . '[' . $hook_name . '][shortcode]';
		$tha_interface_settings = get_option( 'tha_hooks_interface_' . $hooks_group );
        $shortcode_checked = isset( $tha_interface_settings[ $hook_name ]['shortcode'] ) ? $tha_interface_settings[ $hook_name ]['shortcode'] : '';
		$php_checked = isset( $tha_interface_settings[ $hook_name ]['php'] ) ? $tha_interface_settings[ $hook_name ]['php'] : '';
		?>
		<p><?php echo $hook_description; ?></p>
		<p>
		<textarea style="font-family:monospace" rows="10" class="widefat" name="<?php echo $output_field_name; ?>" id="<?php echo $output_field_name; ?>"><?php echo htmlentities( $tha_interface_settings[ $hook_name ]['output'], ENT_QUOTES, 'UTF-8' ); ?></textarea>
		</p>
		<?php if ( current_user_can( 'unfiltered_html' ) ) : ?>
		<p>
		<label for="<?php echo $php_field_name; ?>">
			<input type="checkbox" name="<?php echo $php_field_name; ?>" id="<?php echo $php_field_name; ?>" value="1" <?php checked( $php_checked, 1 ); ?>/>
			<?php _e( 'Execute PHP in this hook (must be enclodes in opening and closing PHP tags)', $this->plugin_slug ); ?>
		</label>
		</p>
		<?php endif; ?>
		<p>
		<label for="<?php echo $shortcode_field_name; ?>">
			<input type="checkbox" name="<?php echo $shortcode_field_name; ?>" id="<?php echo $shortcode_field_name; ?>" value="1" <?php checked( $shortcode_checked, 1 ); ?> />
			<?php _e( 'Run shortcodes in this hook', $this->plugin_slug ); ?>
		</label>
		</p>
	<?php }