Lightguns losing settings

[stevo]

Hi have set up a light gun on same 184 but when you reboot or add devices it loses the settings and goes back to defaults there anything you can do to avoid this happening.
Thanks

 

[rocomat]

What kind of Lightgun?

Perhaps you don't have the permission to modify or change the mame.ini? You use Windows?

1. Look at your mame.ini. See the date/time.
2, Make the changes, when everything works fine go to your mame folder and make a copy of the mame.ini. The mame.ini is now changed? date/time is changed?

3. reboot and look at your mame.ini again