Freshy2 Theme WPMU help needed

Anyone if the Frshy2 theme works on WPMU? I have it loaded on a local server and all is fine until I upload it to a WPMU site. I get the following error when activating it:

Fatal error: Call to undefined function wp_get_current_user() in /home/content/k/g/m/haiti/html/wp-includes/capabilities.php on line 969

From what I can tell the issue appears to be with the Customization plugin that comes with the theme. I’ve left inquiries at the author’s site I thought I’d post here. Both variations of the theme can be seen here:

https://www.nusolutions.biz/demos/haiti/d1/
https://www.nusolutions.biz/demos/haiti/d2/

Any responses appreciated