Hello,
After downloading and installing the Ether forms plug in I bought I get all these error messages on my wordpress dashboard/ HELP?!
Ask the author http://codecanyon.net/item/ether-forms-builder-wordpress-plugin/3969885/support
Note: the item doe snot list WP past 4.1 that the plugin definitely supports for sure (not to say that it will not work in the later versions)