Unable to Activate Required Plugin Home › Forums › Onehost – One Page WordPress Hosting Theme + WHMCS › Unable to Activate Required Plugin This topic has 1 reply, 2 voices, and was last updated 10 years, 9 months ago by Theme Alien. Viewing 1 post (of 1 total) Author Posts August 10, 2015 at 9:26 am #205 Theme AlienMember Hi there! Thanks for the question. For the problem, please remove the Meta Box plugin and then re-install it. Best regards! Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In