Can't Access Plugin in Menu

[mudsak]

Hello...

I just installed the Envato Toolkit plugin to update a themeforest theme. The plugin installed just fine, but I can't seem to access the plugin in the menu. Upon activation the Plugin appears in the Admin Menu, but when I click on it I receive an error stating that I don't have access to that page. The Envato plugin then disappears from the Admin Menu, and the Plugin automatically becomes "Deactivated" in the plugin menu. I've never seen anything quite like this before. It makes me very reluctant to even want to trust using it in the first place. Any advise would be appreciated. It would be phenomenal if updating themes from the theme forest marketplace were half as easy as any other product through the standard Wordpress repository.

Relevant Details...
Wordpress v4.6.1

Theme: RealEstate Pro 7 (contempo themes)

Plugins -
Booking Calendar
Co-Authors Plus
Contempo Mortgage Calculator Widget
Contempo Real Estate Custom Posts
EWWW Image Optimizer
Formidable
Formidable Stripe
Google XML SiteMaps
Imsanity
SG CachePress
Slider Revolution
Wordpress HTTPS
WP Favorite Posts
Visual Composer
WPShapere