Ya I have talked to the guy on twitter about 4:3 support,
because if I wanted to play NES on a LCD I could just use my computer LOL.
Unfortunately he has programmed the black bars on left and right sides, into the display driver.
Apparently he doesn't own a CRT, so he is trying to make accurate aspect ratio on his widescreen LCD monitor.
Hopefully soon he can make a driver without the black bars.
I had to make a directory on my usb stick \RETROARCH\
apparently he introduced some bug and now its not making directories when saving config, and it errors.
Anyways the emulators perform very well and there are tons of options