Make sure you load a save from before the black screen. If that's not working, I'll need you to post your save file (save menu -> save to disk)
I'm a big way through the new Lydia party, so hopefully it won't be too long before the next release. Depends on what else I add to it.
Check the hint for a specific time then be in your room then. If you're still stuck, post your save file and I'll be able to tell you whats up.