You don't have to worry. Your save contains enough information for me to write a simple patcher that adds the clue back into your game if you lost it too early, so no matter whether I make a hotfix or not, your save should be perfectly fine next month. Well, as long as my theories are correct, that is. But I think they are.It sure seems to be the case that it's a bug, no way for me to proceed with my current save. But hey, that means I can play the game from the start again with the next update (Or continue it if a hotfix is possible)