Lost my "Enter" button in MAME settings !!

[Vicious Burger]

Setting up my mame controls in the Menu - (Input (General) / User Interface.  I wanted to have corresponding keys on the control panel for Enter(UI Select), Tab(config menu screen), Escape, Pause but I somehow lost Enter and nothing happens when i press it on the keyboard or the button i had it mapped to.
I was trying to get it so that I could press either the enter key on the keyboard or the CP button. I did this with the Tab key,although now i have to press Tab on the keyboard,and the button i mapped it to both in quick succession. But i can't press enter to go into the menu to change any of the settings. How do i get my Enter back?

If it helps any,the MAME version is 0.113u2

[headkaze]

Delete cfg\default.cfg in your Mame folder and reconfigure everything again. Or you could try editing it manually in notepad.

[Vicious Burger]

Great I knew there was a thing somewhere but couldnt think of it. Done. thanks !!