[Plugin: Google Analytics for WordPress] Undefined property: WP_User::$user_level

Notice: Undefined property: WP_User::$user_level in …/google-analytics-for-wordpress/googleanalytics.php on line 1444

This error(warning) is in function yoast_ga_do_tracking().
Code gets the use object:
$current_user = wp_get_current_user();

Then code looks for public property
$current_user->user_level

Near as I can tell there is no such property.

There is a public method: get_role_caps() that looks like it is the proper way to handle looking for user abilities.

I can make the warnings go away. But I know no idea what the plugin would be doing if the proper method of checking abilities was used.

http://wordpress.org/extend/plugins/google-analytics-for-wordpress/