Errors after activate theme

Hello,

I have got clean install of WP, but I have problems after activat this theme (version 2.3.1). Thanks for help. Jan.

set_time_limit() has been disabled for security reasons in /data/web/virtuals/146723/virtual/www/subdom/new/wp-content/themes/gameaddict/addons/radium-one-click-demo-install-master/init.php on line 89

Warning: Cannot modify header information – headers already sent by (output started at /data/web/virtuals/146723/virtual/www/subdom/new/wp-content/themes/gameaddict/addons/radium-one-click-demo-install-master/init.php:89) in /data/web/virtuals/146723/virtual/www/subdom/new/wp-content/themes/gameaddict/functions.php on line 171

Warning: Cannot modify header information – headers already sent by (output started at /data/web/virtuals/146723/virtual/www/subdom/new/wp-content/themes/gameaddict/addons/radium-one-click-demo-install-master/init.php:89) in /data/web/virtuals/146723/virtual/www/subdom/new/wp-includes/option.php on line 837

Warning: Cannot modify header information – headers already sent by (output started at /data/web/virtuals/146723/virtual/www/subdom/new/wp-content/themes/gameaddict/addons/radium-one-click-demo-install-master/init.php:89) in /data/web/virtuals/146723/virtual/www/subdom/new/wp-includes/option.php on line 838

Warning: call_user_func_array() expects parameter 1 to be a valid callback, function ‘gp_setup’ not found or invalid function name in /data/web/virtuals/146723/virtual/www/subdom/new/wp-includes/class-wp-hook.php on line 298