Hey everyone!
Update 1 for the game is live now for roughly 1.5 hours, and feedback seems to confirm that the update indeed fixes the freeze and/or black screen many people saw when they loaded a world.
The old world files unfortunately have to be considered corrupted, so you need to start a new world if you didn't do that yet after installing the update. Loading worlds created with the old version will not work.
Just to be clear: This is an exception, future updates will not break your old worlds. Only the initial version had a bug that did cause corrupted worlds.
Thanks for your patience on this, I know this should not have happened. I'm very sorry! Please tell me if you still see any issues with world loading or anything else.