404 error after update

Hi,

I have some custom post types that were working fine on Friday. I have updated the plugins to their latest versions and now one of my CPT is giving me a 404.

I can edit the posts generated, they save fine but clicking the View post link just fails.

Wordpress 4.7.2
GD 1.6.17
GD CPT 1.3.3

Server is Nginx:
location / {
try_files $uri $uri/ /index.php?q=$uri&$args;
}

location ~ \.php$ {
set $request_url $request_uri;
if ( $uri ~ ^/(index|plugins) ) {
set $request_url /;
}
fastcgi_split_path_info ^(.+\.php)(/.+)$;
fastcgi_pass unix:/var/run/php/php7.0-fpm.sock;
fastcgi_index index.php;
include fastcgi_params;
fastcgi_param SCRIPT_FILENAME $request_filename;
fastcgi_buffer_size 128k;
fastcgi_buffers 4 256k;
fastcgi_busy_buffers_size 256k;
}