Download MAMEUI 0.164.A (32 bit) from http://hbmame.1emulation.com/
But don't use you're old MAMEUI.ini, set it aside. Let the emulator create a fresh one for you. Then copy and paste the following section from the newly generated MAMEUI.ini into your old MAMEUI.ini:
Using Robbert's latest release that I linked to above along with doing what I described will fix the problem that I had previously reported. You'll just have to customize the fields and columns to your liking. And it will now save properly.
Edited by Big Karnak (08/04/15 10:43 PM)