Trouble Installing Visual Editor Plugin

I am having trouble installing the Visual Composer
plugin that was included in a premium WP theme – Effektive.

The error I get when I attempt to activate is:

object(WP_Error)#347 (2) { [“errors”]=> array(1) { [“plugins_api_failed”]=> array(1) { [0]=> string(218) “An unexpected error occurred. Something may be wrong with www.ads-software.com or this server’s configuration. If you continue to have problems, please try the support forums.” } } [“error_data”]=> array(1) { [“plugins_api_failed”]=> string(2) “N;” } }
Something went wrong with the plugin API.

Any ideas?