any update on this issue?
It was really annoying to have to go check another thread and register an account over there to get the answer. To finish up this thread…
The solution is to install the mb_string extension and restart apache. In my case
sudo yum install -y php-mbstring
sudo /etc/init.d/httpd restart
Thanks to caridad.z for pointing to the forum with the answer and luoy for the original solution (http://wp-types.com/forums/topic/blank-page-when-adding-new-post-type/page/2/#post-29990)
