I have testet with 2 different versions of GameEx, version 5.14 and version 5.25 using the EXACT same config file. Version 5.14 works flawless but 5.25 has random problems with, in my case, Kega Fusion (Sega Genesis emu). When selecting a Sega Genesis rom from the GameEx game-list, Kega Fusion launches, but is hidden by the HideOS app (or so it seems..the screen is black, but I can "ALT-TAB" over to Fusion, which still only shows black screen, but I can see the title of the rom file next to Fusion's name in the "Alt-Tab" probgram list, which must mean that it has launched the rom-files as requested). This seems to happen every 2. or 3. time I try launch a game. Other times it works as is should without problems. However!: If I set "Emu_x Map Keys" to "No", version 5.25 works without problems. So Tom, please try for your self. I have attached my GameEx Fusion cfg. Fusion_cfg.txt