i have installed the Newsletter Plugin on Domain A, created a theme and some lists and setup the whole plugin in the admin area. All was working fine. I also sended some Newsletters with success.
Then i made a domain transfer of the whole site, changed the domain A in domain B in the whole database.
In the plugin admin some of the data like lists, forms and other form data are no longer availible and there are some PHP Warnings like:
Warning: Illegal string offset ‘name_status’ in /www/htdocs/w017f39c/ludwigs-hof_root/wp-content/plugins/newsletter/subscription/subscription.php on line 1491
Warning: Illegal string offset ‘list_1’ in /www/htdocs/w017f39c/ludwigs-hof_root/wp-content/plugins/newsletter/includes/controls.php on line 1078