I just decided to change theme on my site seawiik.com to the beautiful Vortex. It seems to be some troubles with it though.
1. My header banner is not displaying.
2. When I try to solve it and go to Vortex Options in Apperance I get this message:
Fatal error: Call to undefined function wp_get_theme() in /home/seawiikc/public_html/wp-content/themes/vortex/lib/functions/core.php on line 22.
What might be wrong?
Thank you in advance.