I'm playing the Shadow of the Phoenix add-on and now that I'm done with the Kathai map I would like to go back to Empyria to take care of some unfinished business before moving on, however the game won't let me. I've tried accessing the map using both portals and bindstones, and while I do get to the loading screen, it stays stuck at "Initializing platform" and nothing happens, the screen just freezes.

This never happened during the original campaign, and I can access all the other maps I've cleared just fine, so I wonder if that's a bug, and if so, is there a way to fix it? :/