Emulator Cheats

I grabbed the latest from the site and unzipped the file (kept the xml in tact per instructions however I cannot get any cheats to work at all. I have made sure enabled cheats were done

Any suggestions?

Thanks. It's hard because my games work in this version but then if I upgraded to a new version my games wont work. Got any recommendations for a MAME dump for the latest version?

I downloaded the latest cheat engine and unzipped file into my main directory but when trying to apply a cheat I get a message that says no cheat file.

What file do I need to download to get cheats?