“Vision Core plugin is not active or installed ! All themes from theme-vision.com must have enabled Vision Core plugin. Theme updates, shortcodes & portfolio features are disabled! Activate or Install Vision Core Plugin”
I click to update and nothing happens. What is core version? It is free?Do I need the portfolio to work?
That message means that your vision core plugin is not active and,
as its name suggests, Vision core plugin is a ThemeVision Core Plugin for ThemeVision Themes without which the theme can not work properly.
You need activate the vision core plugin and register your theme.