Cast Edit not loading for Produce 48

I've been trying for about 2 days now to edit the cast list via the Produce 48 page but it just loads.. and loads. Even when left open for hours. 

I don't think it's a problem with my connection because I've been opening and editing cast lists that are much longer since then [whilst periodically checking the Produce 48 cast edit page]. 

Wondering if something broke there.