Psychostats Help

[tjk11_00764]

Hi

I'm trying to install Psychostats (http://www.psychostats.com/) onto my website and this is the error I get:

Warning: PsychoTheme: Attempt to set $theme to an invalid name 'default'. Theme not installed or enabled, please check your theme configuration. in /home/raz0r/public_html/upload/includes/class_theme.php on line 299

Fatal error: Call to a member function gettext() on a non-object in /home/raz0r/public_html/upload/includes/class_theme.php on line 406
Fatal Session Error at line 267: ERR 1045: Access denied for user 'ps3'@'10.33.248.79' (using password: NO)

Is this Psychostat's problem or a problem with my website?