Black screen problem has been fixed already, just download the game again.
I found the problem with the Gregor quest, problem found and fixed, uploading the new version as we speak. The quest thing, what happens is that you're past the event that should remove the Mission Log, I can change it back to you if you send me your save file, but only if you guys want to, that's not really game breaking or anything, I'd be glad to change for you though, send the save files to email@example.com
I'm sorry it took a while to fix that one bug, but recently I hired an Eventer to help with the game, turned that he was the one working on most events and scenes, that is why i'm taking a while to find things, he should be the one doing that but he is not around for the weekend, I'm doing my best guys, I hope you're enjoying the game.
Some of you may not have noticed yet, but depending on the guild you choose the missions you do change and later on depending on the Reign Lord you choose the missions will also change, so there is a very high replay value, I hope you guys can waste many hours in the game!