After upgrading to 2.0.6 editing a post with an existing map returned this error;
Warning: Cannot modify header information - headers already sent by (output started at /var/www/mydomain/wp-content/plugins/mappress-google-maps-for-wordpress/mappress_api.php:533) in /var/www/mydomain/wp-includes/pluggable.php on line 890
I have not been able to find a solution.
deactivating/reactivating - did not work
deleting and reinstalling 2.0.4 - did not work