The LOCATE cmd aka location RR feature was pulled out of rr and made into a plugin called GPS2City by mitchjs one or two rr releases ago, check your rr history docs. I think its avail in the app store.
Third, and I'm not sure it's an issue with DFX or RR, but since I updated both RR and DFX at the same time, I cant be sure. The location doesnt work anymore, the one in the GPS etc that tells you the city, state and zip. I know theres a setting in an .ini file, but I set the one I thought was the line and it didnt do anything. There use to be a setting in the config program, but it isnt there anymore. :(