Werid GensFE control problem

[SilentJudge]

ok I set GensFe Controls to match Mame's defualt ones
This is the problem when I hit upper #2 button (xarcade contoller) which is mapped to (left alt) the game stops not like puase were the game stop but the screen turns grey it just stop until i push it again
i dont know why this is happening I hope someone can hlep me thanks

[TalkingOctopus]

alt is a windows shortcut that selects the filemenu.  When you press alt it, GensFE file menu is being selected.  Remap the button to something other than alt and you will be good to go.