Yup same here, all my Mame Data vanished it is still in the right folders but Launchbox just isnt seeing it. Tried re DLing all of it and still have the same issue. I really wanted to like this FE but with all the weird little issues (window moving, RL crashing while in bigbox repeatedly, Bigbox crashing, etc..) I just dont think its right for me. I dont regret my License purchase and hopefully it will get better but its back to hyperspin and gameex for my cab for now.