Romcenter

Hi,
Is it possible tu use retroarch. Because when I choose retroarch.exe, all of Roms are grey.
Can you help me please?

Why would you use RomCenter with RetroArch?
You mean addin it's *.exe to the emulator path inside RomCenter's settings? I don't think that's gonna work that way...
I mean, only standard mame.exe.

Btw, why are you on version 3.x?