I have the same error message with the Beta version
Warning: call_user_func_array() expects parameter 1 to be a valid callback, class ‘NimblePortfolioPlugin’ does not have a method ‘adminNoticeAddonUpdate’ in /home/parduebr/public_html/blynnwoods.com/wp-includes/class-wp-hook.php on line 298
Is anyone else having this issue with the Beta Version?
