Refer to the FAQ section, if you cannot find your solution there and would like assistance from the super-users of the forum, please provide the following information along with the initial question.
Give a brief description of you sytem setup (2/3 screen setup, feedback, addressable leds)
Are you using any 3rd party add-ons (dmdext, doflinx, PUplayer)
Define which emulator you are having issues with (VPX, Future Pinball, FX3)
Is the issue table specific or an issue