Just got this error when adding new site


I just tried to add a new site using New Blog Templates and got this:

Warning: array_walk_recursive() expects parameter 1 to be array, boolean given in /home/web/public_html/wp-content/plugins/blogtemplates/blogtemplatesfiles/copier.php on line 370

Warning: Cannot modify header information - headers already sent by (output started at /home/web/public_html/wp-content/plugins/blogtemplates/blogtemplatesfiles/copier.php:370) in /home/web/public_html/wp-includes/pluggable.php on line 1121

Nothing else loaded, and it took close to a minute to get this error. I checked and the site seems to have been created.

Edit: error_logs have nothing in them :\