On this area page ( mountainproject.com/area/10…) I can see the sub-areas (Northwest Face, South Face, etc). However, clicking on a sub-area (e.g. mountainproject.com/area/11…) leads me to a page with this error (page title is "Server Error | onX Maps"):
Server Error
The server encountered a temporary problem, and is unable to complete your request at this time.
Thanks, Eric. I actually managed to load the sub-area pages for Half Dome. Are you still unable to open them? If not, it could very well be related to the other issue you linked to.