Actually I think it should be FF3ds.arp, not FFsds.arp. do a search or filefind to make sure there's only one copy of the file in the Poser folder structure, and that all the arp files are in the runtime/plugins folder. If nothing else works, try MOVEing the FF3ds.rsr out of the poser folders temporarily to see if Poser will reconstruct it (It may help, I'm not sure of the plugin rsr's functions). Good luck.